Event: Open-Rapid-play

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Opponent Rating Result
Cory S Hazlehurst 2043 0 - 1
Chris Chadwick 2082 0 - 1
Cory S Hazlehurst 2043 ½ - ½
Chris Chadwick 2082 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1763 = (8250 + 400 * (0 - 3)) / 4)

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