Event: Wallington Rapidplay 2

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Opponent Rating Result
Sally Upperton 0 1 - 0
Akshat Suthagaran 1302 0 - 1
Robert Adams 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

301 = (1302 + 400 * (1 - 2)) / 3)

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