Event: Rapid Swiss

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Opponent Rating Result
Jan Balogh 1949 0 - 1
Jake Williamson 1048 0 - 1
Mark Webb 1400 1 - 0
Rufus Easdale 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

999 = (4397 + 400 * (1 - 2)) / 4)

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