Event: Rapid Play League

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Opponent Rating Result
Roger W Jennings 1894 0 - 1
Roger W Jennings 1894 ½ - ½
Ian Carrigan 1849 1 - 0
Ian Carrigan 1849 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1972 = (7486 + 400 * (2 - 1)) / 4)

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