Event: Div 4 - Athenaeum Cup

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Opponent Rating Result
Colin Reid 1491 0 - 1
John N Stevens 1572 ½ - ½
Ben Peretz 1346 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1470 = (4409 + 400 * (1 - 1)) / 3)

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