Event: Richard Furness(500) League

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Opponent Rating Result
Andy Laurence Coe 1818 1 - 0
Nicholas A Burriss 1668 0 - 1
Damian McCarthy 2005 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1697 = (5491 + 400 * (1 - 2)) / 3)

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