Event: B&DCL Div 4

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Opponent Rating Result
Anthony D Pritchard 17 0 - 1
Phil Wallace 120 1 - 0
Seth DR Rider 109 1 - 0
Michael N Davidson 107 1 - 0
Roger D Howell 91 1 - 0
Roger D Howell 91 0 - 1
Jim Newman 105 ½ - ½
Richard Smith 109 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

144 = (749 + 400 * (4 - 3)) / 8)

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