Wimbledon champ Arthur (4)
I believe the answer is:
ashe
'wimbledon champ 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 "Sporting champion once" , "tennis champ" , "He was good enough to win Wimbledon" , "Former tennis star" , "US court star" .)