Event: Wimbledon

PDF Excel

Opponent	Rating	Result
Yunila Pereira	0	0 - 1
Shahid Fayzi	0	0 - 1
Dean Itoyah	0	0 - 1

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

-400 = (0 + 400 * (0 - 3)) / 3)