Event: Division 1

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Opponent Rating Result
Ian J Wallis 171 1 - 0
Abigail R Weersing 152 0 - 1
David Short 137 1 - 0
Philip S Fallon 168 0 - 1
Julia Volovich 162 ½ - ½
James Pack 159 0 - 1
Sarah R Weersing 144 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

42 = (1093 + 400 * (2 - 4)) / 7)

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