Event: Rated Friendlies - Rapidplay

PDF Excel

Opponent	Rating	Result
Freya Bramall	916	0 - 1
James Kennedy	952	0 - 1
Jamie Thomas	0	1 - 0
Alexander Marsden	0	1 - 0
James Kennedy	878	0 - 1
Jamie Thomas	713	1 - 0
George Sparrow	950	1 - 0

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

687 = (4409 + 400 * (4 - 3)) / 7)