Chris , 1975-78 US Open women's singles tennis champion (5)
I believe the answer is:
evert
(Other definitions for evert that I've seen before include "arrange to have the wrong side out?" , "Former US World No 1 tennis player, b. 1954" , "Chris - - (women's tennis)" , "Chris --, female tennis star" , "Hitter of 6 [TENNIS BALL]" .)