Event: 5800-max Rapid-play

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Opponent Rating Result
William Durrant-Jones 1150 0 - 1
Kesi Robinson 1150 0 - 1
William Durrant-Jones 1150 0 - 1
Kesi Robinson 1150 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

950 = (4600 + 400 * (1 - 3)) / 4)

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