Event: South London Qualifier

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Opponent Rating Result
Gavin Tsui 1411 0 - 1
Vanya Smolyakov 0 0 - 1
Harshil Kalepalli 1227 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

746 = (2638 + 400 * (1 - 2)) / 3)

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