Event: Open County Championship

PDF Excel

Opponent	Rating	Result
David J Spence	2240	1 - 0
Eoin Tweeddale	2122	0 - 1
Agoston Mihalik	2223	0 - 1

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

2062 = (6585 + 400 * (1 - 2)) / 3)