Event: Worcestershire Challengers' League

Opponent Rating Result
Peter J Hughes 1435 0 - 1
Joshua Clarke 1788 0 - 1
T Giles Stanton 1585 ½ - ½
Paul Thomas 1353 1 - 0
Christopher J Evans 1732 0 - 1
Steve Alcock 1530 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1504 = (9423 + 400 * (2 - 3)) / 6)

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