Event: Haslemere Trophy

PDF Excel

Opponent	Rating	Result
Zac Welling	0	0 - 1
Roger P Newman	1630	½ - ½
Zac Welling	0	0 - 1
Roger P Newman	1630	0 - 1

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

515 = (3260 + 400 * (0 - 3)) / 4)