Event: Lytham Summer Tournament

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Opponent Rating Result
Raymond J Pomeroy 120 1 - 0
Robert Tinton 125 1 - 0
Kit W Hopkins 179 ½ - ½
John G Cooper 165 1 - 0
John Cox 85 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

455 = (674 + 400 * (4 - 0)) / 5)

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