Event: Division 3

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Opponent Rating Result
Joshua Gittins 0 0 - 1
Dave R Wingrove 99 ½ - ½
Kenneth G Brown 0 0 - 1
Alan Beardmore 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-275 = (99 + 400 * (0 - 3)) / 4)

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