Event: Durham League Division B

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Opponent Rating Result
George Gazis 1947 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1547 = (1947 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Bryan D Harkness 2040 ½ - ½
Robert Berry 1581 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1611 = (3621 + 400 * (0 - 1)) / 2)