Event: North London League

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Opponent Rating Result
Suraj Shankar 0 0 - 1
Ankita Belur 1408 0 - 1
Hannah Kassam 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

69 = (1408 + 400 * (0 - 3)) / 3)

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