Career
Nainkin never reached a final on the Association of Tennis Professionals Tour but made it into the semi finals of the 1995 Nokia Open in Beijing, before losing to Michael Chang. He lost in straight sets to Jonas Björkman in the second round. In the 1998 United States Open he made it into the third round, his best ever showing, with wins over fellow qualifier Mark Merklein (6-7, 6-0, 6-4, 6-4 ) and Gustavo Kuerten (2-6, 6-4, 6-3, 6-4).
The South African represented his country at the 1998 and 1999 Davis Cups.
He now works for the United States Tennis Association and coaches top American players such as Mardy Fish, Sam Querrey and Sloane Stephens. Previously, he had been the personal coach of Wayne Ferreira.
Singles: (1) Doubles: (4).
