Event: Division B

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Opponent Rating Result
Michael B Carroll 138 ½ - ½
William J Moffatt 131 ½ - ½
Robert Tinton 124 ½ - ½
Tony Byrne 111 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

126 = (504 + 400 * (0 - 0)) / 4)

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