Event: Championship 2018

PDF Excel

Opponent	Rating	Result
Keith J Riach	137	0 - 1
John Brooke	117	0 - 1
Tom Devlin	117	½ - ½
Andrew Parker	55	1 - 0

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

7 = (426 + 400 * (1 - 2)) / 4)