Event: Hillingdon Div X

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Opponent Rating Result
Maya Saujani 0 1 - 0
Jai Alexander Dhir 1098 1 - 0
Xiling Wang 1117 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1138 = (2215 + 400 * (3 - 0)) / 3)

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