Harris has three ATP Challenger singles and two Challenger doubles trophies, as well as 13 ITF singles and four ITF doubles titles.
Biance Van Zyl was a former tennis player, although she did not pursue a professional career in the sport.
Novak Djokovic is now just two wins shy of completing the calendar-year Grand Slam, a feat that hasn’t been accomplished in men’s tennis in more than half a century.