Event: Emsworth Chess Club Championship

PDF Excel

Opponent	Rating	Result
Charlie Staples	0	1 - 0
Simon Gates	0	1 - 0
Charlie Staples	0	1 - 0
Simon Gates	0	1 - 0
Joshua D Seal	0	1 - 0

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

400 = (0 + 400 * (5 - 0)) / 5)