Event: Division B

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Opponent Rating Result
David E Aspinall 139 0 - 1
Sean Parker 129 ½ - ½
Sean Parker 129 ½ - ½
Graham Taylor 118 ½ - ½
Ron Broxson 77 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

118 = (592 + 400 * (1 - 1)) / 5)

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