Event: MID Stevenson Cup

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Opponent Rating Result
Henry Cove 170 1 - 0
Trefor H Owens 173 0 - 1
Arnaud Wisman 151 1 - 0
Jerry Anstead 164 1 - 0
C Lucjan Karpinski 164 0 - 1
Trefor H Owens 173 ½ - ½
David A Munford 169 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

281 = (1164 + 400 * (4 - 2)) / 7)

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