Two-time champion Victoria Azarenka overcame five double-faults and held every service game to beat qualifier Magda Linette 6-3 6-0 on Sunday at the Miami Open.
Azarenka, seeded 13th, moved into the fourth round and is bidding to become only the third woman to win Indian Wells and Miami back to back.
No. 2 Angelique Kerber rallied past qualifier Kiki Bertens, who retired trailing 1-6 6-2 3-0.