Event: Doncaster Bell Trophy

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Opponent Rating Result
Peter JE Ackley 201 0 - 1
Sean O McDonald 136 0 - 1
Peter JE Ackley 201 0 - 1
Sean O McDonald 136 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-232 = (674 + 400 * (0 - 4)) / 4)

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