Event: Rapid Play League

PDF Excel

Opponent	Rating	Result
Matt Jones	1724	0 - 1
Matt Jones	1724	0 - 1
Samuel J Playford	1544	1 - 0
Samuel J Playford	1544	½ - ½

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

1534 = (6536 + 400 * (1 - 2)) / 4)