Event: Portsmouth Club Championship

PDF Excel

Opponent	Rating	Result
Charlie Shipp	0	0 - 1
Jack Vorakhanh	1040	0 - 1
David E C (jnr) Ross	1757	0 - 1

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

532 = (2797 + 400 * (0 - 3)) / 3)