Clark Bundy writes: >If a team is 10-0, it's opponents have at least 10 losses. If a team is >5-5, it's opponents will have 5 more wins, and 5 less losses. This is the >key problem with ratings systems that include strength of opponent teams: >if you lose, that rating increases, whereas if you win, it decreases. >Therefore, I propose the following change to ratings systems: when >calculating a team's opponent's strength, do not include the opponent's >game(s) played against the team. This will eliminate the penalty to a >team's opponent's record for beating the opponent. Correct. The Rating Percentage Index method, used in the RPICH ratings I have posted to HOCKEY-L the last two seasons, does not include those games. -- Erik -- GO GOPHERS! -- Minnesota's Pride on Ice P.S. I expect to start compiling and posting RPICH sometime before Christmas.