Event: 5800 max Rapid-play

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Opponent Rating Result
David Smith 1803 0 - 1
Sean Doherty 1503 1 - 0
David Smith 1803 ½ - ½
Sean Doherty 1503 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1553 = (6612 + 400 * (1 - 2)) / 4)

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