Wimbledon winner Arthur (4)
I believe the answer is:
ashe
'wimbledon winner arthur' 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 "Arthur, first black Wimbledon men's singles champion, 1975" , "Former tennis star" , "Arthur, who came to court" , "US rallying champion" , "US tennis player Arthur, 1975 Wimbledon champion" .)