Event: Lytham Club Championship

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Opponent Rating Result
Paul A Evans 184 0 - 1
Philip N Raynor 145 0 - 1
John Cox 82 0 - 1
Ken Hopwood 56 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-283 = (467 + 400 * (0 - 4)) / 4)

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