Event: Worcestershire Challengers' League

PDF Excel

Opponent	Rating	Result
David Smith	1801	1 - 0
Pierre Lipinsky	1512	1 - 0
Paul Thomas	1353	½ - ½

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

1822 = (4666 + 400 * (2 - 0)) / 3)