Event: OTB Club Championship

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Opponent Rating Result
John Cawdery 2086 0 - 1
A Fin O'Regan 1068 1 - 0
Philip Staniland 1879 ½ - ½
Eitan Eisen 1238 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1568 = (6271 + 400 * (1 - 1)) / 4)

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