Russian-born Australian Daria Gavrilova, who just entered the Top 100 for the first time this week, stunned No. 2 seed and five-time Miami runner-up Maria Sharapova Thursday at the $5.3 million Miami Open.
The 21-year-old Gavrilova earned her first victory over a top-10 player with a 7-6 (7-4), 6-3 decision in Thursday's second-round action.
Gavrilova, who is playing in her first Miami Open, will face Kurumi Nara of Japan in the third round. Nara got past No. 25 seed Caroline Garcia 6-3, 7-6 (11-9).
Former world No. 1 Caroline Wozniacki did move on, routing American Madison Brengle 6-0, 6-1 in 56 minutes on the hardcourts at Crandon Park. The fourth- seeded 2014 U.S. Open runner-up Wozniacki will next face Estonia's Kaia Kanepi, who doused 28th-seeded American Varvara Lepchenko 6-2, 6-4.
Venus Williams began her 16th appearance at the Miami Open by beating Polish qualifier Urszula Radwanska by a 6-3, 6-2 margin. It was Williams' first match since the semifinals at Doha in late February.
Meanwhile, seventh-seeded 2012 Miami champ Agnieszka Radwanska handled Slovak Anna Schmiedlova 6-4, 7-5, eighth-seeded Russian left-hander Ekaterina Makarova mauled Italian Karin Knapp 6-1, 6-3 and ninth-seeded German Andrea Petkovic rolled past American Christina McHale 6-2, 6-2.
Also, 12th-seeded Spaniard Carla Suarez Navarro handled Swiss Stefanie Voegele 6-3, 6-1 and 14th-seeded rising Czech star Karolina Pliskova overcame German Annika Beck 2-6, 6-3, 6-4.
Little-known Spaniard Paula Badosa Gibert ousted lucky loser Zheng Saisai 6-1, 7-5.
In other action involving seeds, France's Kristina Mladenovic took out No. 19 Czech Barbora Zahlavova Strycova 7-5, 6-2; No. 22 Frenchwoman Alize Cornet eliminated Russian Elena Vesnina 6-4, 6-1; No. 26 Elina Svitolina beat Bojana Jovanovski 6-3, 7-6 (7-3) and No. 31 Romanian Irina-Camelia Begu overcame Czech Tereza Smitkova 5-7, 6-4, 6-4.
The 2015 Miami champion will earn $900,400.