Event: Christmas Rapid

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Opponent Rating Result
Mark Heffer 1644 ½ - ½
Sergejs Starodubcevs 1465 1 - 0
Steve Lovell 1879 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1663 = (4988 + 400 * (1 - 1)) / 3)

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