Event: Lytham Club Championship

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Opponent Rating Result
Simon Dale 0 1 - 0
Peter A Wilson 145 ½ - ½
John Regan 104 ½ - ½
Keith Sansom 91 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

185 = (340 + 400 * (1 - 0)) / 4)

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