Tennis Hall of Famer Arthur (4)
I believe the answer is:
ashe
'tennis hall of famer 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" , "Arthur ___, American tennis player 1943-1993" , "tennis champ" , "Arthur, who came to court" , "US court star" .)