Event: County Championship

PDF Excel

Opponent	Rating	Result
Jules Brown	0	0 - 1
George West	0	1 - 0
Richard Stokes	0	0 - 1
Nathan O'Reilly	0	1 - 0
Herman FF Kok	0	0 - 1

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

-80 = (0 + 400 * (2 - 3)) / 5)