1975 Wimbledon champ (4)
I believe the answer is:
ashe
'1975 wimbledon champ' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ashe that I've seen before include "Sporting champion once" , "Former tennis star" , "tennis champ" , "Arthur, first black Wimbledon men's singles champion, 1975" , "Ex-Wimbledon champ" .)