Some smashes for a Wimbledon champion (4)
I believe the answer is:
ashe
'a wimbledon champion' is the definition.
(tennis player Arthur Ashe)
'some smashes for' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'ASHE' is hidden in the letters of 'smashes for'.
(Other definitions for ashe that I've seen before include "Ex-Wimbledon champ" , "Arthur, first black Wimbledon men's singles champion, 1975" , "US tennis player Arthur, 1975 Wimbledon champion" , "tennis champ" , "Sporting champion once" .)