Event: Durham League Division B

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Opponent Rating Result
Kevin Cox 1593 1 - 0
Sebastian Palucha 1322 0 - 1
Deborah Edmundson 1541 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1485 = (4456 + 400 * (1 - 1)) / 3)

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