Event: West London Qualifier

Opponent Rating Result
Tomas O'Leary 1353 0 - 1
Hanh Nhi Ngo 0 1 - 0
Ruth Kifle 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

584 = (1353 + 400 * (2 - 1)) / 3)

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