Event: Atkinson Cup

PDF Excel

Opponent	Rating	Result
Derek A Sheppard	1720	½ - ½
Luke Julyan	1658	½ - ½
Jonathan R Slater	1550	0 - 1

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

1509 = (4928 + 400 * (0 - 1)) / 3)