| US Squash Rating System |
| Players of relatively equal skill have their ratings adjusted by a moderate amount when they play each other. The math behind the algorithm is as follows: |
|
WRO = Winner's old rating LRO = Loser's old rating K = constant = .1 D = denominator = .5 PW = Probability that the winner would win = (1/(POWER(10,(-(WRO-LRO)/D))+1)) PL = Probability that the loser would win = (1/(POWER(10,(-(LRO-WRO)/D))+1)) WRN = Winner's new rating = (WRO+K*(1-PW)) LRN = Loser's new rating = (LRO+K*(0-PL)) |