Event: Summer League Division 2

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Opponent Rating Result
Tim Humphries 1924 ½ - ½
Craig Chatterton 1700 0 - 1
Oliver Graham 1864 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1696 = (5488 + 400 * (0 - 1)) / 3)

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