Event: Rated Friendlies - Rapidplay

PDF Excel

Opponent	Rating	Result
Dylan Parkinson	835	0 - 1
Siôn Storey	440	1 - 0
George Sparrow	933	0 - 1
Jamie Thomas	708	0 - 1
Jamie Thomas	713	1 - 0
Cora Wainwright	1005	0 - 1
Jamie Thomas	716	0 - 1

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

593 = (5350 + 400 * (2 - 5)) / 7)