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