60% of teams ruled out by side one plays away (9)

I believe the answer is:

adulterer

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'60' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

I don't understand the remainder of the clue.

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(Other definitions for adulterer that I've seen before include "Perhaps playboy" , "Sinner" , "Man who cheats on his wife" , "Away player" , "Durer tale (anag)" .)

I've seen this clue in The Independent.

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