Event: Lytham Club Championship

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Opponent Rating Result
Raymond J Pomeroy 120 0 - 1
Patrick N Coleman 108 0 - 1
John Cox 85 0 - 1
John Regan 112 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-294 = (425 + 400 * (0 - 4)) / 4)

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