Novak Djokovic has progressed to the Miami Open third round after defeating Australian Bernard Tomic in 7-6 (7/2), 6-2.
He will next play Federico Delbonis in Miami Gardens, Florida.
Indian Wells Masters winner Dominic Thiem, however, suffered a shock defeat under the hands of Polish 22-year-old Hubert Hurkacz.
Meanwhile, World No 1 Naomi Osaka beat the 141st-ranked Belgian qualifier Yanina Wickmayer 6-0 6-7 (3-7) 6-1.
This comes as Serena Williams crushed Sweden’s Rebecca Peterson 6-3, 1-6, 6-1, and Venus advanced with a 7-6 (7/4), 6-1 win over Spain’s Carla Suarez Navarro.

Atletico hit back to hold Arsenal in cagey Champions League semi-final first leg
Lucky loser Potapova makes history with Madrid Open semi-final run
Britain's Draper to miss French Open with ongoing knee injury
Canadian government allocates $145 million for World Cup security
Clinical Sinner holds off wildcard Jodar to reach Madrid Open semis
