Event: Division Two

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Opponent Rating Result
John Mildenhall 151 0 - 1
Hossameldin Aboushady 151 ½ - ½
Bruce L Baer 0 ½ - ½
Robert J Wallman 149 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

13 = (451 + 400 * (0 - 1)) / 4)

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