Event: Summer Rapidplay

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Opponent Rating Result
Sam Stevenson 1045 0 - 1
Tim Hind 1000 0 - 1
Francis Batchelor 1980 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

942 = (4025 + 400 * (0 - 3)) / 3)

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