Event: Summer Swiss

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Opponent Rating Result
Philip N Raynor 1731 0 - 1
William Gee 0 0 - 1
David Gamble 1428 1 - 0
Patrick N Coleman 1490 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

962 = (4649 + 400 * (1 - 3)) / 4)

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