Crossword Genius

One at cards is excellent (3)


I believe the answer is:


I believe this is a double definition.

'one at cards' is the first definition.
(I've seen this before)

'excellent' is the second definition.
(ace can informally mean very good)

'is' acts as a link.

(Other definitions for ace that I've seen before include "Entertain" , "One in playing-cards" , "winner in court" , "'wicked'!" , "Girl" .)

I've seen this clue in The Sun.
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