Event: Northamptonshire Silver King League

PDF Excel

Opponent	Rating	Result
John Edmundson	1240	1 - 0
Ioan Strugar	0	0 - 1
Vijay Lad	0	0 - 1

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

280 = (1240 + 400 * (1 - 2)) / 3)