Event: Spring Swiss

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Opponent Rating Result
Abu Hasan 1387 0 - 1
Joel McKechnie 0 0 - 1
Sailesh Shah 1170 1 - 0
Brian E Foster 1558 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

829 = (4115 + 400 * (1 - 3)) / 4)

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