Event: Division B

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Opponent Rating Result
William J Moffatt 131 1 - 0
Gareth Ellis 139 0 - 1
Steven Mason 113 ½ - ½
John Stanton 110 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

123 = (493 + 400 * (1 - 1)) / 4)

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