Event: Lytham Club Championship

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Opponent Rating Result
John Regan 112 1 - 0
Robert Tinton 125 1 - 0
Roy Ellames 198 ½ - ½
John G Cooper 165 1 - 0
David E Aspinall 139 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

468 = (739 + 400 * (4 - 0)) / 5)

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