Shortcut Method for Measuring Reads on a Series
Posted: Mon May 02, 2011 10:06 pm
Was looking over the "statgeek" picks in Henry Abbott's playoff contest. He awards 5 points for a correct team, then 2 bonus points if you get the exact number of games for that team. Looks like a fun contest. Was thinking though that it's possible to have a pretty good read on a series but not get rewarded in the scoring in that format.
Let's say some pick a team to sweep in four straight games...while others like the same team, but think it's going to be a tough series that goes 7 full games. If that team gets upset, everyone takes a zero in the series even though those who thought it would be tough actually had a pretty good read...and those that thought it would be a blowout had a misread.
Or, let's say one guy had the favorite in four in a rout...another had the underdog in a seven-game nailbiter. If the favorite wins in seven games, who had the better read? If the goal is to pick the winner, it's one way. If we're trying to evaluate the analysts...or evaluate our own personal analysis on a group of series, picking a sweep in what turned out to be a very tight series feels like an error.
Came up with a way of grading "reads" on a series if anyone's interested. Imagine a scale where you just circle your pick on the number line. I'll use O for Orlando and A for Atlanta from the first round:
O4-O5-O6-O7-A7-A6-A5-A4
The two extremes are at the sides. Tight competitive series are in the middle.
Once the series is complete, just count the steps between the pick and reality. Nobody in Henry's contest picked Atlanta to win the series. But, a pick of O7 is closer to reality (A6) than O5 or O4, and probably represents a better read on the competitiveness of the series from the predictor.
Went through and tabulated the distances from reality in the first round in that contest...
Morris 9
Stahlhut 11
Ilardi 13
Hollinger 14
Voulgaris 14
Paine 14
Berri 16
With Mother's Day coming up, I'll leave Mrs. Abbott out for now, and put her back in if she surges back onto the leader board with the second round games.
Kevin Pelton picked all but the Chicago/Indiana series over at BP. If I give him 0.5 points for that (because everyone either had C4 or C5 and he probably would have too), he's at 12.5 points on the scale above.
Rick Reilly also posted picks at ESPN. He's at 15. Probably won't be able to monitor Reilly going forward though because he picked the whole event up front, and three of his projected second round matchups ended up not existing (and Denver won't win the West).
Strong performance so far from Morris, averaging just over 1 placement away from reality over the first eight games.
Second round picks are up now. Nobody picked any upsets, so we can assume these are all picks based on "reads of the series" rather than game theory attempts to get back into the contest (meaning, if you fall behind early in Henry's format, you may have to pick underdogs to catch back up or you get locked out from any chance to win, but nobody's done that yet). We may see some game theory strategies in the later rounds...but "later rounds" are only 3 series of the 15 in the whole playoffs...so 80% of the assessments are already on the record.
Not suggesting using "distance from reality" is better for a contest. I can see wanting to reward getting the winner of a series correct when prizes are at stake. But, just in terms of evaluating a read on a series, or reads throughout a collection of series...this seems like a handy way to do it whether you're looking at your own methodologies or the reads of others.
Anyone have other ideas on this? Or, a possibility for the ideal contest format that punishes bad reads, rewards good reads, but also credits correct picks on which teams will advance?
Let's say some pick a team to sweep in four straight games...while others like the same team, but think it's going to be a tough series that goes 7 full games. If that team gets upset, everyone takes a zero in the series even though those who thought it would be tough actually had a pretty good read...and those that thought it would be a blowout had a misread.
Or, let's say one guy had the favorite in four in a rout...another had the underdog in a seven-game nailbiter. If the favorite wins in seven games, who had the better read? If the goal is to pick the winner, it's one way. If we're trying to evaluate the analysts...or evaluate our own personal analysis on a group of series, picking a sweep in what turned out to be a very tight series feels like an error.
Came up with a way of grading "reads" on a series if anyone's interested. Imagine a scale where you just circle your pick on the number line. I'll use O for Orlando and A for Atlanta from the first round:
O4-O5-O6-O7-A7-A6-A5-A4
The two extremes are at the sides. Tight competitive series are in the middle.
Once the series is complete, just count the steps between the pick and reality. Nobody in Henry's contest picked Atlanta to win the series. But, a pick of O7 is closer to reality (A6) than O5 or O4, and probably represents a better read on the competitiveness of the series from the predictor.
Went through and tabulated the distances from reality in the first round in that contest...
Morris 9
Stahlhut 11
Ilardi 13
Hollinger 14
Voulgaris 14
Paine 14
Berri 16
With Mother's Day coming up, I'll leave Mrs. Abbott out for now, and put her back in if she surges back onto the leader board with the second round games.
Kevin Pelton picked all but the Chicago/Indiana series over at BP. If I give him 0.5 points for that (because everyone either had C4 or C5 and he probably would have too), he's at 12.5 points on the scale above.
Rick Reilly also posted picks at ESPN. He's at 15. Probably won't be able to monitor Reilly going forward though because he picked the whole event up front, and three of his projected second round matchups ended up not existing (and Denver won't win the West).
Strong performance so far from Morris, averaging just over 1 placement away from reality over the first eight games.
Second round picks are up now. Nobody picked any upsets, so we can assume these are all picks based on "reads of the series" rather than game theory attempts to get back into the contest (meaning, if you fall behind early in Henry's format, you may have to pick underdogs to catch back up or you get locked out from any chance to win, but nobody's done that yet). We may see some game theory strategies in the later rounds...but "later rounds" are only 3 series of the 15 in the whole playoffs...so 80% of the assessments are already on the record.
Not suggesting using "distance from reality" is better for a contest. I can see wanting to reward getting the winner of a series correct when prizes are at stake. But, just in terms of evaluating a read on a series, or reads throughout a collection of series...this seems like a handy way to do it whether you're looking at your own methodologies or the reads of others.
Anyone have other ideas on this? Or, a possibility for the ideal contest format that punishes bad reads, rewards good reads, but also credits correct picks on which teams will advance?