Victoria Azarenka, a former world No. 1, has eased past lucky loser Anna Blinkova 6-1 6-0 in the second round of the WTA's Mubadala Silicon Valley Classic.
Azarenka broke the Russian teenager's serve six times to advance to face American qualifier Danielle Collins, a 6-1 3-6 6-1 winner over Vera Lapko of Belarus.
Blinkova replaced Garbine Muguruza in the draw after the top-seeded grand slam winner withdrew because of a right arm injury.
"I've been feeling some pain in my right arm for a couple of days and realised I am not ready to play the match, so hopefully I can recover for the next tournaments," Muguruza said.
Johanna Konta, the 2016 champion in San Jose, followed her Tuesday upset of 23-time grand slam champion Serena Williams with a 6-1 6-4 victory over American teenager Sofia Kenin.
Konta will play No. 4 seed Elise Mertens of Belgium. Mertens topped American wild-card Ashley Kratzer 6-2 6-0.
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