Event: Doncaster League

PDF Excel

Opponent	Rating	Result
Peter M Tate	129	0 - 1
Nicholas Mahoney	147	½ - ½
Robert Bacon	109	0 - 1

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

-138 = (385 + 400 * (0 - 2)) / 3)