1991 Wimbledon champ (4)
I believe the answer is:
graf
'1991 wimbledon champ' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for graf that I've seen before include "German tennis player, b. 1969" , "German count - German tennis player" , "Seven-times women's Wimbledon champion, b. 1969" , "Steffi --, tennis champion" , "Steffi --, tennis player" .)