Event: Club Championship

PDF Excel

Opponent	Rating	Result
Alfie Simpson	0	1 - 0
Andrew T Watson	1528	0 - 1
Alan Ward	1351	½ - ½
Paul Terry	1797	0 - 1
Gary Winson	1574	0 - 1

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

1090 = (6250 + 400 * (1 - 3)) / 5)