Event: Mini League

PDF Excel

Opponent	Rating	Result
David Gaskell	1108	0 - 1
Eva Oleinic	0	1 - 0
Sam Dawson	0	0 - 1

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

236 = (1108 + 400 * (1 - 2)) / 3)