Event: Durham League Division A

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Opponent Rating Result
Francis Batchelor 2047 1 - 0
David P Mooney 2246 0 - 1
Mick Fenton 2120 0 - 1
Nicholas Webb 1757 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1943 = (8170 + 400 * (1 - 2)) / 4)

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