Event: Wycombe & Hazlemere Club Championship

PDF Excel

Opponent	Rating	Result
Gerald S Pierce	131	0 - 1
Andrew W Hill	126	0 - 1
David Brown	104	0 - 1
Malcolm Instone	80	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-90 = (441 + 400 * (1 - 3)) / 4)