Crackerjack

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5 8

ace

pro

'crackerjack' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for ace that I've seen before include "fighter pilot" , "SERVE?] that's non-returnable" , "even higher than the king" , "Possibly a diamond" , "One-spotted card" .)

I've seen this clue in The Daily Mail.

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