Event: Rapid Swiss

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Opponent Rating Result
Rufus Easdale 0 0 - 1
George Robinson 1396 1 - 0
Craig Bradshaw 1348 0 - 1
Mark Webb 1400 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

836 = (4144 + 400 * (1 - 3)) / 4)

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