Event: Under 100

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Opponent Rating Result
Brian W Williamson 1396 ½ - ½
Graham Wilson 1097 1 - 0
Christopher Exton 1112 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1468 = (3605 + 400 * (2 - 0)) / 3)

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