Event: Clough (Handicap)

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Opponent Rating Result
George Leach 118 1 - 0
Steve Harrington 122 ½ - ½
John K Holliday 141 0 - 1
Ian Jewsbury 135 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

129 = (516 + 400 * (1 - 1)) / 4)

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