Event: Division A

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Opponent Rating Result
Philip Armstrong 176 1 - 0
Phil M Taylor 149 1 - 0
Tim Hilton 170 1 - 0
Mike J Surtees 197 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

373 = (692 + 400 * (3 - 1)) / 4)

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