Polona Hercog
Novak Djokovic, of Serbia, returns to Federico Delbonis, of Argentina, during the Miami Open tennis tournament, Sunday, March 24, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)
Djokovic beats Delbonis in 3rd round at Miami Open

By Steven Wine Mar. 24, 2019 10:14 PM EDT