Event: Grand Prix S5

PDF Excel

Opponent	Rating	Result
Owen Frodsham	1050	1 - 0
David Millington	1627	½ - ½
Joseph P Alcock	1558	1 - 0
Simon R Edwards	2054	0 - 1

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

1672 = (6289 + 400 * (2 - 1)) / 4)