Golf celebrity abandoning fine sport (4)
I believe the answer is:
game
'sport' is the definition.
(I've seen this before)
'golf celebrity abandoning fine' is the wordplay.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'celebrity' becomes 'fame' (celebrity can mean the quality of being famous).
'abandoning' is a deletion indicator.
'fine' becomes 'f' (abbreviation e.g. condition of old coins, books).
'fame' with 'f' taken out is 'ame'.
'g'+'ame'='GAME'
(Other definitions for game that I've seen before include "Hunted animals or birds" , "Somehow disabled" , "Sport - willing - lame" , "partridge, pheasant ...?" , "Creatures killed for sport" .)