Event: West London Qualifier

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Opponent Rating Result
Hari Singh 1421 0 - 1
Cordelia Knight-Webb 0 0 - 1
Caroline-Olivia Edwards 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

340 = (1421 + 400 * (1 - 2)) / 3)

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