Event: Portsmouth Club Championship

PDF Excel

Opponent	Rating	Result
Itmam Ekram	0	0 - 1
David C Goddard	1664	0 - 1
Jack Vorakhanh	1040	0 - 1

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

501 = (2704 + 400 * (0 - 3)) / 3)