Event: Peter-Div1TestingGrading

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Opponent Rating Result
Joe Kilshaw 181 0 - 1
Keith J Palmer 161 ½ - ½
Andreas Sivacenko 156 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

166 = (498 + 400 * (1 - 1)) / 3)

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