Event: Division 3

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Opponent Rating Result
John Wright 0 1 - 0
Artur Mieczkowski 128 0 - 1
Arthur F De Silver 122 0 - 1
Mason Woodhams 132 0 - 1
Pj J Power 0 0 - 1
William F Tracey 122 0 - 1
Ian Dennis 135 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-137 = (639 + 400 * (1 - 5)) / 7)

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