Britain's Johanna Konta moved into the Miami Open fourth round with a dominant win over Elise Mertens.
Defending champion Konta, ranked 14th in the world, secured a 6-2 6-1 victory over the Belgian world number 21 in 65 minutes.
The 11th seed could next face 37-year-old Venus Williams, the world number eight.
American Williams plays 26-year-old Dutchwoman Kiki Bertens, ranked 29th in the world, later on Friday.