Event: Division One

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Opponent Rating Result
Gary Haime 153 0 - 1
Richard CT Parry 155 0 - 1
Trevor J Holt 146 1 - 0
Andy Pollock 172 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

157 = (626 + 400 * (2 - 2)) / 4)

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