Event: Doncaster Bell Trophy

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Opponent Rating Result
Alan Bramall 141 1 - 0
John E Beech 125 1 - 0
Alan Bramall 141 1 - 0
John E Beech 125 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

533 = (532 + 400 * (4 - 0)) / 4)

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