Event: WMA Summer League Division 1

PDF Excel

Opponent	Rating	Result
Sam Foster	0	0 - 1
Neil Clarke	158	½ - ½
Sam Foster	0	1 - 0
Neil Clarke	158	0 - 1

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

-21 = (316 + 400 * (1 - 2)) / 4)