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.
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