Event: Division 2

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Opponent Rating Result
Peter Barlass 142 ½ - ½
Peter Logan 0 ½ - ½
Keith Jones 118 ½ - ½
Goodchild Ndou 114 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-7 = (374 + 400 * (0 - 1)) / 4)

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