Ana Konjuh defeated former world number one Victoria Azarenka to reach the quarter-finals of the Mallorca Open on Thursday.
The seventh seed wasted no time on the grass courts of the Spanish City, needing just 70 minutes to beat the two-time grand slam winner 6-1, 6-3.
The opening set featured some long games but Konjuh would reign supreme, breaking twice to seal the set.
Azarenka would fight back and earn a break in the second set, but it was too late as Konjuh broke back three times to secure her place in the last eight.
"I know Azarenka is coming back, but it's always tough to play against her," Konjuh said afterwards.
"She's one of the best players in the world. I was motivated for sure, and I'm really glad that I could play so well today and win."
— WTA (@WTA) June 22, 2017
Waiting for the Croatian in the last eight is second seed Anastasija Sevastova. The Latvian came back from a set down to defeat Vavara Lepchenko 6-7(2), 6-1, 6-3 earlier in the day.
Elsewhere, veteran Roberta Vinci defeated Kirsten Flipkens 6-4, 5-7, 6-2 to reach the last eight in Spain.