Event: South London Qualifier

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Opponent Rating Result
Hongyu An 91 ½ - ½
Bharat Vatsa 1032 1 - 0
Ronik Popli 1407 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

843 = (2530 + 400 * (1 - 1)) / 3)

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