Event: Division B

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Opponent Rating Result
Shaun Tumelty 87 1 - 0
Sean Fitzgibbon 150 0 - 1
Steve G Hughes 129 1 - 0
John Addison 143 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

327 = (509 + 400 * (3 - 1)) / 4)

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