Event: D&DCL Div 3

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Opponent Rating Result
D Philip Morgan 145 0 - 1
Philip Sheldon 128 1 - 0
Dean M Hartley 141 0 - 1
R Arthur Hall 110 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

131 = (524 + 400 * (2 - 2)) / 4)

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