Event: South London Qualifier

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Opponent Rating Result
Grace Isaacs 0 1 - 0
Elena Rees 0 1 - 0
Poorwa Gunarathna 1318 0 - 1
Advik Jain 1311 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

657 = (2629 + 400 * (2 - 2)) / 4)

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