Event: OTB Club Challenge Standard

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Opponent Rating Result
Nigel White 1439 1 - 0
Vittorio Nigrelli 1745 ½ - ½
Ryan Colclough 1500 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1828 = (4684 + 400 * (2 - 0)) / 3)

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