Event: Northamptonshire Silver King League

PDF Excel

Opponent	Rating	Result
Ryan Lack	0	1 - 0
Sian Crooke	0	1 - 0
David Caldwell	0	1 - 0
Amrik Tahim	1234	1 - 0

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

709 = (1234 + 400 * (4 - 0)) / 4)