Event: Lytham Club Championship

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Opponent Rating Result
Roy Ellames 198 0 - 1
Keith Sansom 91 0 - 1
John Regan 112 0 - 1
John Cox 85 1 - 0
Patrick N Coleman 108 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

39 = (594 + 400 * (2 - 3)) / 5)

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