Is OPR an accurate measurement system?

[Jared Russell]

Originally Posted by CJ_Elliott

But my question still stands. How valid is OPR if there are teams that can be tossed out of rank just because of a poor schedule, their teammates being broken, etc?

If you assume that every robot makes the same contribution to the score in every match regardless of their teammates, it is a perfect model.

The less that assumption holds, the less the model is perfect. It's usually accurate for gross estimation of team ability (top quartile vs. bottom quartile, etc.) and for finding outliers (the rare team that is several standard deviations better than the mean), but I wouldn't trust it too much beyond that, especially early in the season (where match-to-match contributions tend to vary a lot).