Event: Club Knock out

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Opponent Rating Result
Thisumi Jayawarna 1671 1 - 0
Thisumi Jayawarna 1674
Donna Chadwick 1298 1 - 0
Paul Curran 1530 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1900 = (4499 + 400 * (3 - 0)) / 3)

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