Event: Doncaster Bell Trophy

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Opponent Rating Result
Peter JE Ackley 201 0 - 1
Colin Parrish 91 1 - 0
Peter JE Ackley 201 0 - 1
Colin Parrish 91 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

146 = (584 + 400 * (2 - 2)) / 4)

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