Event: Club Championship B Division

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Opponent Rating Result
Geoff Mann 1472 0 - 1
Laura Holdforth 872 1 - 0
Tim Hind 1345 1 - 0
Toefl Lankapura 1499 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1297 = (5188 + 400 * (2 - 2)) / 4)

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