Sun Scorched wrote:I'd be interest to really crack into the math, it just seems like there has to be gaps in the data.
Pretty sure you have to have a graduate degree in statistics to do that.
But I think you're right in that it has serious limitations. The biggest thing is that you have to have a very large, varied data set to have anything meaningful, and it's never really large or varied enough to be anywhere close to perfect.
Problems come in when, for example, you have players that pretty much always play together. If Nash and Hill always play together, the data doesn't know whether one is dragging the other down or whether one is pulling the other up. For example, in 2005-2006, Rasheed Wallace had the best adj +/- and Rip Hamilton had the worst. They played almost all their minutes together, but for the few minutes they separated, Rasheed's squad outperformed Rip's. The stats gave Rasheed all the credit. They can be jumpy.
But it's still aligns pretty well with intuition. The top players right now are:
1) Kevin Durant
2) LeBron James
3) Steve Nash
4) Dwyane Wade
5) Dwight Howard
But then there are surprises. Anderson Varejao is No. 8 and Dudley is No. 14. It makes sense to me; these guys are good defenders who hustle and play team basketball. they probably wouldn't be near as successful if they weren't playing on teams with quality creators like James and Nash.
I think adjusted +/- per unit is better; a player might be incredible valuable, but only when he's playing with a good point guard, for example.
I believe Dudley is one of the best players in the NBA when he's playing with other good creators. I think he should play huge minutes
with Nash.