Event: 4 Board League B

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Opponent Rating Result
Simon Jones 1405 1 - 0
Mark McGinty 1591 ½ - ½
Callum Welsh 1931 1 - 0
Gordon Farrar 1831 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1990 = (6758 + 400 * (3 - 0)) / 4)

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