Event: 4-Board Division 2

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Opponent Rating Result
Chris J Matthews 144 1 - 0
Andrew D Bettley 148 0 - 1
David J Gibson 114 ½ - ½
Richard O Callis 144 ½ - ½
Chris J Matthews 144 ½ - ½
Andrew D Bettley 148 0 - 1
Richard O Callis 144 0 - 1
Paul A Allison 151 ½ - ½
Steve King 113 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

50 = (1250 + 400 * (1 - 3)) / 9)

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