Exploring with WinShares per 48 minutes

Home for all your discussion of basketball statistical analysis.
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Exploring with WinShares per 48 minutes

Post by Crow »

I noticed that LeBron James was the top rated player last on Win Shares per 48 and PER last season, but that his ratings on these metrics were actually the lowest for the league leader in 25 years (since Bird in 1985-6). His marks in 2008-9 were the highest since Jordan's in 1990-1 and you'd have to go back to early 70s Jabbar to find the previous guy. Jabbar is the only guy to top James more than once on WS/48, he did it 3 times. Wilt also did it once. Jordan also topped .300 3 times (to tie Jabbar in that regard) but topped James' best only once.

http://www.basketball-reference.com/lea ... early.html

Will James top .300 on WS/48 again or was he one and done? He just missed a second one in 2009-10. Obviously this will affect his championship prospects / total some but it is so rare it is not a championship requirement. Might even be a negative to concentrate so much of a team's strength in one player as opposed to have 2-3 strong stars.


Kobe's top performance on WS/48 was the 195th best in NBA history at .224. http://www.basketball-reference.com/lea ... eason.html
It came in 2005-6, when Kobe and the Lakers got bounced in the first round. In the title seasons he was near .200 and only .160 in the last one (was it the last one ever?) In all the title seasons Shaq and Gasol were better on WS/48, Shaq by a larger margin.


Wade's best was .239 in his title season with Shaq, but he was the clear leader on WS/48. Last season he was at .218. Bosh was at .177 (with a career best of .200 4 seasons ago).

In his 4 peak seasons with the Cavs, James never had a teammate above .180 (Varejao was the 2nd best on WS/48 several times).


Jordan averaged a bit less than 1 other player above .200 on WS/48 in their title seasons and once had 2 with him.


It takes a combination of enough top player excellence and key support. The mix varies.


Dirk had a .200+ sidekick in 4 seasons (and in 2002-3 he had two- Nash and Bradley) but this season Chandler was his highest rated sidekick ever on WS/48 at .218.


In 2000-1 there were 8 guys over .200 on WS/48 in the league. Utah had 2 in Stockton and Malone but Shaq was league's best in the regular season and maintained it in the playoffs while Malone had a really terrible playoffs.

In 2001-2 Shaq again was best in the regular season and only slipped a little in the playoffs. The Spurs had 2 over .200 but Robinson slipped pretty badly.

In 2002-3 Kobe joined Shaq over .200 just in time to face Dallas with 3. Unfortunately for Dallas all 3 slipped, Dirk by a modest amount, Nash badly and Bradley completely.

In 2003-4 the Wolves were the only team with 2 over .200 but both Garnett and Cassell underperformed and Detroit took the prize with 4 guys over .170 in the playoffs.

In 2004-5 the Spurs were the only team with 2 over .200 and won it.

In 2005-6 the Suns were the only team with 2, Dirk was highest, but Wade carried the day. Shaq faded quite a bit but Mourning went over .200 in the playoffs to provide enough support.

In 2006-7 the Spurs smashed to the title with 3 over .200 (Ginobli, Duncan and Barry)

In 2007-8 both Boston and San Antonio had 2 over .200 but the Spurs top guys slipped further than Boston's.

In 2008-9 both the Lakers and Magic had 2 but both Lakers maintained that in the playoffs while the Magic only had 1 do so.

In 2009-10 the Spurs were the only team with 2 regular season but both faded badly in the playoffs. Meanwhile Kobe picked it up in the playoffs to .190 and he and Gasol were enough to win it again.

In 2010-11 there were actually 4 teams with 2 in the regular season. In Chicago both faded, in Orlando 1. Miami and Dallas both had 2 over .200 for the full playoffs but Dallas played better in the series.

2 over .200 on WS/48 doesn't a guarantee of a title. You have to maintain it and often have to beat it at least once. But it appears to be a pretty good shorthand regarding what you usually need to win one.
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

There were only 39 players with over 1000 minutes played last season and .150+ on WS/48 in the regular season. http://bkref.com/tiny/P5zOd
All but 4 played for playoff teams, for an average of 2.2 per playoff team. The 8 teams who got out of the first round had 21 for an average of 2.6. The 4 conference finalists had 11 for an average of 2.75. The Lakers and Thunder had 4, the Heat 3.

If you don't have a really super superstar who gives large edge over other #1 players then the strength of your 2nd, 3rd and 4th players is the next main way to distinguish yourself.

The Bulls had 2 over .200 and 5 just under .150 (but over .140) and 2 more over .100. Influenced by the great shot defense and the shared credit for it.

Non-playoff teams averaged just 2.1 guys over .100 with 1000+ minutes played. Influenced by only 1 non-playoff team with an above average defense. On non-playoffs almost everyone should be available in trade discussions if any upgrade option can be found.

The playoff teams averaged 5.8. (The Bulls had 9.)

The view with WS/48 is definitely different than with most boxscore metrics because team shot defense is included in WS/48, in a broad way.

Some other metric would be needed to capture counterpart shot defense, if one wanted to. Adjusted +/- tries to capture it alongside overall team defense. Counterpart WS/48 might be desirable but not available. Counterpart PER and Wins Produced might be less desirable but are available.


Kevin Martin had the best WS/48 of any player with a 1000+ minutes played a WS/48 above .130 and a Defensive rating worse than 108. It is a short list of only 12 guys (mostly starters, all near or over 2000 minutes). Only Houston, Denver and New York had more than one such guy and New York actually had 3 post-trade (all of "the big 3"). Nash had the worst Defensive Rating in the group.

How did one year RAPM evaluate these 12 guys overall? 8 positive, 4 negative. Nash getting the highest RAPM at +3.9, Amare the lowest at -0.5. RAPM actually had Nash estimated at a slight positive on defensive RAPM. Amare was estimated at the 4th worst defensive RAPM in 2011 and that more than wiped out his offensive impact and pulled him down more on RAPM than on WS/48.

So ultimately WS/48 in not the only metric to check and rely on but it seemed interesting / useful to check around with it.
Mike G
Posts: 6154
Joined: Fri Apr 15, 2011 12:02 am
Location: Asheville, NC

Re: Exploring with WinShares per 48 minutes

Post by Mike G »

The average age of the WS leader on the championship team, since 1947, is right at 28 years.
The '90s were especially an old man's league, with only Duncan in '99 (age 22) being under 27 and leading a team to a title.

In these 65 seasons, 33 different players have led a titling team in regular season WS.
The average age at first doing it is 27.1 years. The oldest first-timer was Havlicek in '74, age 33. At age 32, Hayes in '78 and Dirk this year.

Besides Duncan, Magic also was team leader at age 22, in '82.
%W is (leader) WS/tm (pythagorean wins)

Code: Select all

Win Shares leaders of champs    pyth             yr  Champ  leader  age    WS    tm    %W 
yr   Champ  leader  age    WS    tm    %W       1979  Sea   Sikma    23    8.8   48   .183
2011  Dal   Nowitzki 32   11.1   53   .209      1978  Was   Hayes    32    8.3   43   .193
2010   LA   Gasol    29   11.0   54   .204      1977  Por   Walton   24   10.2   55   .185
2009   LA   Gasol    28   13.9   61   .228      1976  Bos   Cowens   27   10.7   47   .228
2008  Bos   Garnett  31   12.9   67   .193      1975   GS   Barry    30   12.7   50   .254
2007   SA   Duncan   30   13.0   64   .203      1974  Bos   Havlicek 33    9.7   51   .190
2006  Mia   Wade     24   14.4   52   .277      1973   NY   Frazier  27   13.0   59   .220
2005   SA   Duncan   28   11.2   63   .178      1972   LA   Wilt     35   15.8   67   .236
2004  Det   Billups  27   11.3   59   .192      1971  Mil   Kareem   23   22.3   67   .333
2003   SA   Duncan   26   16.5   57   .289      1970   NY   Frazier  24   15.0   62   .242
2002   LA   Shaq     29   13.2   60   .220      1969  Bos   Howell   32   11.3   55   .205
2001   LA   Shaq     28   14.9   51   .292      1968  Bos   Howell   31   10.1   51   .198
2000   LA   Shaq     27   18.6   64   .291      1967  Phl   Wilt     30   21.9   61   .359
1999   SA   Duncan   22    8.7   39   .223      1966  Bos   Russell  31   11.7   52   .225
1998  Chi   Jordan   34   15.8   61   .259      1965  Bos   Russell  30   16.9   60   .282
1997  Chi   Jordan   33   18.3   68   .269      1964  Bos   Russell  29   17.3   59   .293
1996  Chi   Jordan   32   20.4   70   .291      1963  Bos   Russell  28   13.5   56   .241
1995  Hou   Olajuwon 32   10.7   47   .228      1962  Bos   Russell  27   15.5   60   .258
1994  Hou   Olajuwon 31   14.3   53   .270      1961  Bos   Russell  26   13.0   52   .250
1993  Chi   Jordan   29   17.2   58   .297      1960  Bos   Russell  25   13.8   54   .256
1992  Chi   Jordan   28   17.7   66   .268      1959  Bos   Russell  24   12.9   50   .258
1991  Chi   Jordan   27   20.3   63   .322      1958  StL   Pettit   25   11.0   39   .282
1990  Det   Laimbeer 32   10.1   57   .177      1957  Bos   Sharman  30   10.4   44   .236
1989  Det   Laimbeer 31    9.0   56   .161      1956  PhW   Johnston 26   13.9   46   .302
1988   LA   Magic    28   10.9   56   .195      1955  Syr   Schayes  26   12.0   40   .300
1987   LA   Magic    27   15.9   62   .256      1954  MnL   Mikan    29   12.7   45   .282
1986  Bos   Bird     29   15.8   63   .251      1953  MnL   Mikan    28   14.6   52   .281
1985   LA   Magic    25   12.7   58   .219      1952  MnL   Mikan    27   14.4   49   .294
1984  Bos   Bird     27   13.6   57   .239      1951  Roc   Risen    26    9.3   42   .221
1983  Phl   Moses    27   15.1   60   .252      1950  MnL   Mikan    25   21.1   55   .384
1982   LA   Magic    22   12.9   53   .243      1949  MnL   Mikan    24   20.9   47   .445
1981  Bos   Maxwell  25   11.0   56   .196      1948  Bal  Jeannette 30    8.2   33   .248
1980   LA   Kareem   32   14.8   55   .269      1947  PhW   Fulks    25   16.3   40   .408
Surprising (to me) team WS leaders: Sharman, Howell (2), Maxwell, Laimbeer (2). And Kobe (not).
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

The age of the WS leader on the championship team was less than 26 in only 12% of cases during the last 32 years. Will Kevin Durant or Derrick Rose be another exception in the next 2 years? With the proposed CBA changes how many of their current teammates will still be around in 3+ years? Will title contention windows become shorter? Will dynasties be less likely? Will "re-loading" be easier favored teams / top markets, not being as locked into stars past their peak contention years (which appear right now to be later than their peak individual performance years)?

The last 5 champs averaged being $22 million over the cap. If you can't overspend the cap at all or by much or by much without the true cost after the luxury tax going up a lot more than in the past does quality Coaching and Analytics and General Manager decision-making become more important / more valuable / more sought & paid for?

The WS leader was 29 or older in almost 50% of the last 32 years. Nearly all these guys were on their third contract already but in the future if contract lengths are shortened by a year or two it will move even further to being all of them and it will move that decision point up further ahead of the average age of title success. How many will stick with their original team all that way, thru 2 chances to move elsewhere, especially if it is even harder to keep key elements of the crew they had during their 2nd contract with them? Will there be more star player alliances and player alliances hatched before the end of their current contracts? Do shorten contracts tend to put more power in the hands of players & agents to determine the competitive landscape? How thoroughly have the league and the owners and particular owners thought thru all the implications of the proposed changes to the CBA? Are they really fully aware of and willing to accept all that comes with it?

A hard or harder cap would seem likely to favor locations with player desired weather, amenities and big market endorsement & business opportunities. The big market may lose some of their edge but if they still have edge in other areas, the results of player movement and competitive outcomes might not shift that much or at least not as much as if these other factors didn't exist.
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

AYC's post from the previous version of the forum:

Crow, you inspired me. I looked at 75 players and came up with 44 with a WS/48 of .190 or better in their "prime". I defined prime as a player's best stretch of consecutive seasons with a WS/48 above his career average (minimum of 5 consecutive seasons. I excluded players with under 500 career games, and also players who entered the league before the shot clock era). Here it is:

1987-98, 830g, .281 WS/48, M.Jordan
1971-81, 853g, .267 WS/48, K.A-Jabbar
1960-68, 706g, .267 WS/48, W.Chamberlain
1990-01, 845g, .258 WS/48, D.Robinson
2005-11, 548g, .248 WS/48, L.James
1989-01, 1028g,.235 WS/48, K.Malone
1994-05, 801g, .234 WS/48, S.O'Neal
1961-68, 604g, .233 WS/48, O.Robertson
1964-72, 623g, .232 WS/48, J.West
1981-91, 797g, .231 WS/48, M.Johnson

1988-97, 713g, .231 WS/48, C.Barkley
2001-11, 864g, .226 WS/48, D.Nowitzki
1999-10, 895g, .222 WS/48, T.Duncan
1988-01, 1094g,.220 WS/48, J.Stockton
2002-11, 747g, .220 WS/48, K.Garnett
2004-11, 564g, .220 WS/48, M.Ginobili
1980-88, 711g, .217 WS/48, L.Bird
1956-64, 670g, .216 WS/48, B.Pettit
2003-10, 613g, .211 WS/48, C.Billups
1958-65, 601g, .210 WS/48, B.Russell

1981-86, 461g, .210 WS/48, S.Moncrief
2005-10, 379g, .210 WS/48, A.Stoudamire
2007-11, 403g, .209 WS/48, D.Howard
2005-11, 486g, .203 WS/48, D.Wade
1980-88, 611g, .202 WS/48, A.Dantley
2000-09, 748g, .201 WS/48, K.Bryant
1984-91, 598g, .200 WS/48, K.McHale
1973-78, 429g, .200 WS/48, B.Lanier
1969-75, 550g, .199 WS/48, W.Frazier
1960-66, 529g, .199 WS/48, S.Jones

2005-11, 489g, .199 WS/48, P.Gasol
1988-95, 583g, .198 WS/48, C.Drexler
1977-84, 624g, .197 WS/48, J.Erving
1974-78, 385g, .197 WS/48, B.McAdoo
1979-87, 700g, .196 WS/48, M.Malone
1996-00, 319g, .196 WS/48, A.Mourning
1959-63, 341g, .195 WS/48, E.Baylor
1986-95, 746g, .194 WS/48, H.Olajuwon
1989-94, 387g, .194 WS/48, M.Price
1990-98, 726g, .193 WS/48, R.Miller

1961-69, 712g, .193 WS/48, B.Howell
1958-63, 450g, .192 WS/48, C.Hagan
1967-75, 719g, .191 WS/48, C.Walker
1968-74, 416g, .190 WS/48, W.Reed
Mike G
Posts: 6154
Joined: Fri Apr 15, 2011 12:02 am
Location: Asheville, NC

Re: Exploring with WinShares per 48 minutes

Post by Mike G »

How well does Win Shares predict (or retrodict) the Sixth Man of the Year award?
Starting from this page -- http://bkref.com/tiny/y7uVE
-- most Win Shares since 1982 by players starting no more than half their games; I just sorted by season, jotted down their votes for 6th man, ranked by votes received.

Sixth man award started in 1983, and votes are known since 1985.
The top 100 WS for non-starters range from 11.1 down to 6.4.
In a 30-year interval, that's 3.3 per year. A few times there is only one qualifying player; he won the award each time.
When the winner of the 6moy did not have 6.4 WS, I had to look him up.

Code: Select all

year                                            1998   votes  Tm  G  GS   Min  WS  WS/48
. 1982   votes  Tm  G  GS   Min   WS  WS/48   Manning    57  PHO  70 11  1794  6.5  .174
Ruland         WSB  82  0  2214  7.8  .170    T Murray    1  WAS  82 12  2227  6.5  .139
McHale         BOS  82 33  2332  7.5  .155    A Davis     0  IND  82 12  2191  7.4  .162
. 1983                            #             1999              
B Jones   (w)  Phl  74  0  1749  6.4  .175    Armstrong  54  ORL  50 15  1502  6.4  .205
Woodson        KCK  81  3  2426  7.8  .153      2000                                  #
McHale         BOS  82 13  2345  7.5  .154    R Rogers  104  PHO  82  7  2286  7.4  .154
. 1984                                        McGrady     3  TOR  79 34  2462  6.6  .129
McHale    (w)  BOS  82 10  2577 10.5  .196    Je Williams 2  DET  82  1  2102  7.6  .174
Cooper         LAL  82  9  2387  6.5  .130      2001                            ##   ###
. 1985                                        McKie      57  Phl  76 33  2394  5.9  .118
McHale     57  BOS  79 31  2653 11.0  .199    Best        5  IND  77 21  2457  7.2  .140
. 1986                            ##   ##     S Smith     4  POR  81 36  2542  8.2  .155
Walton     32  Bos  80  2  1546  5.0  .157    K Thomas    0  NYK  77 29  2125  8.2  .185
Pierce     11  MIL  81  8  2147  8.3  .186    A Daniels   0  SAS  79 23  2060  6.6  .153
. 1987                                          2002                           ##    ##
Pierce     41  MIL  79 31  2505  9.4  .180    Williamson 56  Det  78  7  1701  5.1  .144
Stockton    0  UTA  82  2  1858  6.7  .174    B Jackson  30  Sac  81  3  1750  5.4  .148
. 1988                                        Horry       1  LAL  81 24  2140  6.9  .154
Tarpley    67  DAL  81  9  2307  7.8  .163    J Barry     0  DET  82  6  1985  7.5  .180
Bailey     13  UTA  82 10  2804  6.8  .116    Kirilenko   0  UTA  82 40  2151  7.3  .164
Levingston  0  ATL  82 32  2135  7.0  .157    Pollard     0  SAC  80 29  1881  6.8  .175
Rodman      0  DET  82 32  2147  6.8  .153      2003                           ###   ###
.                                ##    #      B Jackson  52  Sac  59 26  1676  5.5  .157
. 1989   votes  Tm  G  GS  Min   WS  WS/48    Redd       33  MIL  82 14  2316  8.0  .167
E Johnson  33  PHO  70  7  2043  6.5  .152    Kirilenko  10  UTA  80 11  2213  9.2  .199
Bailey     26  UTA  82  3  2777  6.5  .113    Bradley     0  DAL  81 39  1731  7.4  .204
Rodman     17  DET  82  8  2208  8.1  .175      2004                                  #
J Williams  4  WSB  82  1  2413  6.9  .136    Jamison    43  DAL  82  2  2376  9.0  .183
HR Williams 1  CLE  82 10  2125  7.7  .173    Ginobili   33  SAS  77 38  2260  9.1  .194
Pierce      1  MIL  75  4  2078  6.7  .155    Cardinal    0  GSW  76 11  1634  7.2  .212
. 1990                           ###   ##       2005                          ##### ####
Pierce     77  Mil  59  0  1709  5.8  .163    B Gordon   88  Chi  82  3  2002  3.5  .084
Schrempf    8  IND  78 18  2573  8.1  .151    Boykins    11  Den  82  5  2162  6.0  .133
McHale      0  BOS  82 25  2722 11.1  .195    Szczerbiak  1  MIN  81 37  2558  7.3  .136
HR Williams 0  CLE  82 29  2776  8.7  .150    Chandler    0  CHI  80 10  2189  8.3  .183
. 1991                                 #      Okur        0  UTA  82 25  2304  7.0  .147
Schrempf   38  IND  82  3  2632  9.0  .165    A Daniels   0  SEA  75  2  2026  6.8  .160
Majerle    37  PHO  77  7  2281  7.2  .152      2006              
McHale      8  BOS  68 10  2067  7.9  .182    M Miller   88  MEM  74  9  2268  7.4  .157
Pierce      6  TOT  78  2  2167  7.9  .174      2007                           ##   ###
Schayes     0  MIL  82 38  2228  6.8  .147    Barbosa   101  PHO  80 18  2613  8.2  .151
. 1992                                        Ginobili   18  SAS  75 36  2060 10.6  .246
Schrempf   54  IND  80  4  2605  9.8  .181    Maggette    0  LAC  75 31  2291  7.0  .146
Majerle    19  PHO  82 15  2853  9.8  .165    Lee         0  NYK  58 12  1731  6.9  .191
HR Williams 0  CLE  80 12  2432  9.2  .181    B Barry     0  SAS  75 28  1631  6.8  .201
Pinckney    0  BOS  81 36  1917  7.5  .187    Varejao     0  CLE  81  6  1932  6.6  .164
Kemp        0  SEA  64 23  1808  6.7  .177      2008              
                                  #     #     Ginobili  123  SAS  74 23  2299 11.1  .232
. 1993   votes  Tm  G  GS   Min  WS  WS/48    Terry       0  DAL  82 34  2579  8.6  .160
C Robinson 89  POR  82 12  2575  6.8  .127    Childress   0  ATL  76  0  2274  7.6  .160
Mason       3  NYK  81  0  2482  7.4  .143    Lee         0  NYK  81 29  2356  7.4  .151
Strickland  0  POR  78 35  2474  7.4  .143    Scola       0  HOU  82 39  2024  6.5  .154
. 1994                            ##    ##      2009                            #    #
Curry      46  ChH  82  0  2173  5.0  .110    Terry     111  DAL  74 11  2491  7.3  .140
McMillan   37  Sea  73  8  1887  6.0  .154    Odom        2  LAL  78 32  2316  6.9  .143
Gilliam     2  NJN  82  5  1969  6.8  .166    Millsap     0  UTA  76 38  2290  7.7  .162
. 1995                                 #        2010                           ##    ###
Mason      47  NYK  77 11  2496  8.6  .166    Crawford  110  ATL  79  0  2460  7.3  .143
Gilliam     1  NJN  82 30  2472  6.6  .128    Terry       6  DAL  77 12  2540  6.5  .123
Perkins     0  SEA  82 37  2356  8.5  .173    Ginobili    2  SAS  75 22  2150  9.7  .216
. 1996                                        Varejao     2  CLE  76  7  2166  8.1  .179
Kukoc      45  CHI  81 20  2103 10.1  .231    Odom        1  LAL  82 38  2585  7.7  .143
Sabonis    24  POR  73 21  1735  8.4  .233    Millsap     1  UTA  82  8  2277  7.2  .151
Kerr        1  CHI  82  0  1919  8.3  .208    Landry      0  TOT  80 29  2469  7.7  .150
Perkins     0  SEA  82 20  2169  6.9  .153    Redick      0  ORL  82  9  1808  6.5  .173
Legler      0  WSB  77  0  1775  6.8  .184      2011              
. 1997                            ##  ####    Odom       96  LAL  82 35  2639 10.1  .184
Starks     84  NYK  77  1  2042  5.8  .136    Harden      0  OKC  82  5  2189  7.1  .156
Kukoc       7  CHI  57 15  1610  6.9  .204    Lawson      0  DEN  80 31  2103  6.7  .153
Perkins     4  SEA  81  4  1976  7.1  .173    R Anderson  0  ORL  64 14  1424  6.4  .217
Kerr        0  CHI  82  0  1861  7.5  .192                  
              
Egregiously out of order stats are noted by increasing numbers of # over the column.
Most of the ##+ head scratchers are guards, esp. after the first few years.
Sometimes an out of order winner may be favored by having started fewer games.
Missing games doesn't seem to be a penalizer. Lots of "make up calls".
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

ESPN rankings and WinShares for Past Champs and the Thunder

Post by Crow »

Previously posted at DailyThunder.com:

So on the broad-based, subjective ESPN NBA ranking project, 8 teams had more top 50 guys than the Thunder. All 3 of the other conference finalist were top 5 on this while the Thunder were in a 4 way tie for 9th (to 12th).

The Thunder in a 2 way tie for 5th for most guys in the top 100. Dallas was number 1 here. Is that the Mav’s and Thunder’s basic strategy? Seems like it. Also seems like the less popular strategy (at least this season) as only 1 of the conference finalists met this criteria.

I guess you could win either way but it probably would be possible to use some objective criteria and compare top 50 vs top 100 strategies over the last 5-10-20-or more seasons and see which won titles more often.

The west in definitely tougher than the east. Maybe the best strategy varies by conference. Again, could be researched.

Only 7 of the 25 guys in the top 5s by position made the conference finals. Dallas was the only one with just 1 instead of 2. And he was the very oldest such star. Another tidbit of championships most often going to grizzled vets not young guns.

Do Harden and / or Ibaka make it to the top 50 in the next season or two? If so then their strategy changes complexion and moves to the path that was more successful this season at least to the level of conference finalist.

In the last 12 seasons every champ has had 5-6 guys in the top 100 on Winshares except once for the Shaq-Kobe Lakers when tehy had just 4. The 2010-11 Thunder had just 4 (Westbrook, Harden, Durant, Ibaka). I’d say they need to get to 5. It is somewhat unlikely to be from Collison or Thabo getting better, though it could be if the team defense were to go back to the way it performed with Adams in 2009-10. It could also come from Jackson or a new guy via trade or free agency or a future draft.

In the last 12 seasons 9 of the champ have at least 3 guys in the top 50 on Winshares. Once the 2005-6 Heat won with just one top 50 guy but 5 in the top 100. Twice teams won the title with just 2 top 50 guys, this season with Dallas and once with the Lakers when they had 4 in the top 100.

Seems like to be fully covered you’d want at least 3 in the top 50 and at least 5 in the top 100. Of the 4 conference finalists last season only Chicago had that. 9 of the last 12 champs met both criteria.

The 2010-11 Thunder were one short on each. According to Winshares.

ESPN must not have counted Perkins for the Thunder. That would give them 5 in the ESPN top 100. If Harden or Ibaka advance to top 50 then they will meet both ESPN criteria. The WinShares count could still be different. But the concept is similar.

On “WinShares per 48 minutes” last season Perkins was well outside that top 100 at 274th. His best season was 2007-08 when he was 50th on this per minute metric and 70th of overall Winshares. If he could get to one or both of those levels that would help or help a real lot.

Green was 180th on WinShares last season. Not good enough for what they needed from him, what they envisioned for him, what they originally traded for. But they finally realized the shortfall.

They eventually freed themselves of the salary commitment originally tied to Allen but there were probably other better ways to do it (in my opinion at the time of that original deal and certainly in retrospect) and "worst case scenario" it would have been over this upcoming season. But Allen is still productive. If fact he was 17th best on WinShares (in Boston) last season.

The larger, more important perspective though is that 9 of the last 12 champs met both the top 50 and top 100 WinShares criteria.
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

Mike doesn't look like all the data you intended to display made the transfer to the forum.

Win Shares and Win Shares per 48 minutes only called the winner in 6 of the 15 cases displayed, if I am reading it right.

The Voters are probably not thinking much about player impact on team shot defense in their 6th man award voting while it is crudely estimated in WinShares.
Mike G
Posts: 6154
Joined: Fri Apr 15, 2011 12:02 am
Location: Asheville, NC

Re: Exploring with WinShares per 48 minutes

Post by Mike G »

There should be 30 years covered, 28 with a 6moy award. Do you see 2 sets of columns, the first 16 years on the left and the latest 14 on the right?
If your screen is too narrow, try copying into Notepad or something. That ought to contain it.
Sometimes WS and WS/48 aren't the same guy.

Regarding the seeming bias favoring guards, here are median WS/48 rates of players with 1000 to 2000 minutes in the last 5 seasons.
SS# is 'sample size', the number at each position, in b-r.com's newly expanded position description.

Code: Select all

pos   SS#  median
G     245    .073
G-F    38    .077
F-G    10    .085
F     234    .095
F-C    31    .100
C-F     5    .116
C      76    .112
Centers (and C-F) are some 55% "better than" guards, not counting elite players nor scrubs.
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

Weird. The table didn't look exactly the same to me as it did a few hours ago. Still cropped severely but not quite as bad. (Then next time I log in it was back to the way it was before.) Must be related to my old browser that can't be updated on this system. I can see the full table in notepad though. Thanks for the tip (again, as this probably had this happen before).

Looking at all 30 seasons, Win Shares and WS/48 each still agreed with the voters' choice less than half the time.
Mike G
Posts: 6154
Joined: Fri Apr 15, 2011 12:02 am
Location: Asheville, NC

Re: Exploring with WinShares per 48 minutes

Post by Mike G »

Sorted into bins of minutes per game, in the last 10 seasons, median WS/48 by position, alongside the number of player-seasons.

Code: Select all

.   minutes per game                                          
pos  36+  ws/48   33-36  ws/48   30-33  ws/48   27-30  ws/48  24-27  ws/48
C    15   .184      31   .145      46   .130      50   .116      45   .111
F   204   .147     149   .115     157   .104     136   .098     134   .098
G   202   .124     145   .114     134   .095     141   .084     154   .076
                                          
.   minutes per game                                          
p  21-24  ws/48   18-21  ws/48   15-18  ws/48   12-15  ws/48   9-12  ws/48
C    53   .095      52   .090      71   .084      78   .080      73   .038
F   161   .096     162   .089     175   .083     203   .067     211   .054
G   168   .068     175   .064     173   .055     166   .037     159   .033
The latest center who averaged 40 minutes is Shaq in 1999-00.
There isn't any mpg interval in which C's number half as many as F or G. Mostly it's 1/3 or less.
If many F's are playing out of position at C, that may hurt their numbers relative to C; but why are guards so relatively low?
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

Guards have the highest usage, yet the lowest average TS% and highest TO%. And lowest rebounding. Affected by how roles are given out and performed. (Whether big man can handle / should get more usage is a question for another time.)


There seems to be a mini-run of recent champs being tall. I think most or all of the last 6 title winners have been top 10 on average roster height (not weighted by minutes). It wasn't that way in the decade before.

Looking at B-R data it appears that this season's conference finalists were all top 7-8 on minutes played by players listed as F-C, C-F and C, though there are guys listed as Fs who did play some center based on play by play estimates at 82 games so these numbers are not precise. Based on average WS per 48 for the positions that might be giving them some advantage against teams playing smaller, especially if they are having more minutes played by players listed as guards.

Using 6-9 or taller as the definition of a big man instead, it appears that at least 3 of the 4 conference finalists (and 6-7 of those who got out of the first round) were probably top 12 in minutes given to them (traded players could affect that and I didn't feel like sorting that out). Dallas was not one of them strictly, but with Marion's reach, they might effectively qualify.
Mike G
Posts: 6154
Joined: Fri Apr 15, 2011 12:02 am
Location: Asheville, NC

Re: Exploring with WinShares per 48 minutes

Post by Mike G »

Using eWins and some different position designations (from dougstats), I get a different breakdown:

Code: Select all

pos   eW/48   %Min
C     .103    .170
PF    .120    .196
SF    .087    .205
SG    .085    .208
PG    .103    .221
PF are, presumably, F who also rebound; PG are G who assist a lot.
Still, guards play 43% of all minutes, centers just 17%. That's 3% of NBA lineups = 2F + 3G

Maybe (probably) bigs are just more important generally, and PF who don't score much are asked to play C; leaving the PF category as by definition players who do a lot: Griffin, Gasol, Love, Aldridge, Zach, Dirk, Amare, Bosh, Garnett, Smoove, DWest, Millsap, Odom, Scola, Brand, Boozer, DLee, Humphries, ...

These positional disparities may suggest eWins still doesn't weigh assists quite enough. And WS even more so.

When I remove Dwight from consideration, C's average .099 eW/48. Further, shift Duncan back to PF, and they're .096
If Gasol and Amare are among the C, it's PF .117 - .109 C .
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

From the old forum location:

Mathketball (October 20)

Crow, you mention above that several of the .200+ guys have tailed off in the playoffs and ultimately their teams didn't win the championship. I bet it would be pretty interesting to compare regular season vs. post season numbers for WS/48. It might give added insight what guys show up for the big game and what guys don't.
Crow
Posts: 10565
Joined: Thu Apr 14, 2011 11:10 pm

Re: Exploring with WinShares per 48 minutes

Post by Crow »

I did some year to year account of regular season to playoff changes for the every top teams but I'll look at it again more broadly based on the suggestion.

In the last 12 years there have been an average of 8 players over 2000 minutes and also over .200 WS/48. In the playoffs the average drops to 6. That is not dramatic / probably expected given tougher competition.

Here are some of the regular seasons over .200 vs playoffs by prominent player

Name RS P
R Allen 1 2
Anthony 0 1
Billups 5 4
Bryant 6 2
B Davis 0 2
Duncan 9 4
Durant 1 1
Garnett 5 1
Gasol 3 3
Ginobili 4 3
Howard 3 2
James 7 3
Kidd 0 1
K Malone 2 0
Ming 2 2
Nash 4 0
Nowitski 8 6
S O'Neal 5 5
Paul 3 2
Wade 4 3
Westbrook 0 1
Pierce 2 1
D Robinson 3 2
Rose 1 0
Stockton 2 2
Stoudemire 3 2

Of course these are cumulative totals for all seasons within the period and not all are matched pairs.

The most regular seasons over .200 were by Dirk, TimmyD and LeBron. The most such performance in the playoffs were by Nowitski, O'Neal, Duncan and Billups.


The biggest over-performer in the playoffs compared to regular season was B. Davis, but that could perhaps also be explained as under-performance in the regular season compared to his salary and expectations.

The biggest negative differentials between regular season and playoffs were by Duncan, Bryant, Garnett, James and Nash, with Nash they only one in this group to never score .200+ in the playoffs (probably due to team defense). Being on teams that missed the playoff deprived James of 1 opportunity to repeat such a performance in the playoffs and Garnett of 2 but Duncan, Bryant and Nash don't have those excuses and end up with the biggest negative differentials. James tended to only miss by a little on WS/48 in the playoffs. With Duncan it was sometimes close, sometimes not. With Garnett, Bryant and Nash it was usually not that close to a very wide miss. Even with his WS/48 playoff misses Bryant has 5 titles though. The clear candidate for least WS/48 clutchness in the playoffs is Nash.
Post Reply