Event: Division B

PDF Excel

Opponent	Rating	Result
William O'Rourke	154	½ - ½
John Whitfield	159	1 - 0
Sean Fitzgibbon	171	1 - 0

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

428 = (484 + 400 * (2 - 0)) / 3)