Event: Worcestershire Championship League

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Opponent	Rating	Result
David Spowart	1771	1 - 0
Ian J Clarke	1978	0 - 1
Mike Hadley	1861	½ - ½
Nigel S Towers	1807	½ - ½
Mark Bethel	1810	½ - ½
Joshua Clarke	1755	0 - 1
Dale Jackson	0	0 - 1
Andrew S Whitten	1657	1 - 0

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

1530 = (12639 + 400 * (2 - 3)) / 8)