Event: Calderdale 30

PDF Excel

Opponent	Rating	Result
Dave Colledge	0	0 - 1
Phil Cook	0	0 - 1
David C Wedge	0	0 - 1
Colin Frank	0	1 - 0
Angel A Gonzales	0	1 - 0

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

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