Event: Summer League Division 3

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Opponent Rating Result
John Crewe 1480 0 - 1
Steve Daykin 1323 0 - 1
John J M Richards 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

534 = (2803 + 400 * (0 - 3)) / 3)

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