Tennis: Djokovic passes Delbonis test to reach Miami 4th round but defending champ Stephens upset by Maria

March 25, 2019 6:26 PMMIAMI (AFP, REUTERS) - Novak Djokovic remains on course for a record seventh Miami Open tennis title, but the world No. 1 was made to fight all the way to the last 16 in a 7-5, 4-6, 6-1 victory over spirited Federico Delbonis on Sunday (March 24).