Event: Rapid Play League

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Opponent Rating Result
Rangarirai Ernest Karumazondo 1937 0 - 1
Rangarirai Ernest Karumazondo 1937 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1737 = (3874 + 400 * (0 - 1)) / 2)

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