Great Britain's Johanna Konta eased into the last 16 of the Indian Wells Masters with a straight-sets victory over Denisa Allertova.
Konta, seeded 25th, secured a 6-4 6-1 win over the Czech, who had seen off Australian Open champion Angelique Kerber in the previous round.
The 28-year-old broke in the fifth game of the opening set before taking full control in what was a dominant display.
She will face Czech Karolina Pliskova, who defeated Ana Ivanovic 6-2 6-0.