Event: Division A

PDF Excel

Opponent	Rating	Result
Mark A Whitehead	167	½ - ½
Jon I Lonsdale	152	0 - 1
William O'Rourke	156	1 - 0

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

158 = (475 + 400 * (1 - 1)) / 3)