Novak Djokovic received treatment for a wrist issue during his United Cup match against Jiri Lehecka on Tuesday. Still, the world number one battled to a 6-1 6-7(3) 6-1 win that put Serbia on track to pip the Czech Republic 2-1 and make the quarter-finals. The 36-year-old Djokovic had a medical timeout after losing the second set tiebreaker but returned to play the third, taking a double break in the first game to move to 5-3 and never looking back.
