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Event: Minor

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Opponent Rating Result
Graham K Brown 141 1 - 0
Michael Fielding 144 1 - 0
James I G Kearney 172 1 - 0
Simon Smith 172 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

557 = (629 + 400 * (4 - 0)) / 4)

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