Swiatek, who won the first leg of the Sunshine Double at Indian Wells earlier this month, was completely outplayed by the Russian world number 16, who claimed the biggest win of her career. "I just went out on the court and did my best, I think it went quite well," said Alexandrova.

Top seed Swiatek, who captured the Sunshine Double in 2022, never broke Alexandrova's serve and had no answer to her powerful and precise groundstrokes under the lights in South Florida.

Alexandrova, seeded 14th, will next face fifth seed Jessica Pegula in the quarterfinals after she overcame fellow American Emma Navarro 7-6(1) 6-3.

Frenchwoman Caroline Garcia's serve was clicking early in her battle against Gauff and she never faced a break point in the opening set before the American raised her level to even the affair at a set apiece.

In the first game of the deciding set, Garcia fended off four break points to hold serve and broke at love to take a 2-0 lead she would not relinquish against her 20-year-old opponent.

"I think I stayed positive and optimistic about my serve," Garcia said about the five break points she saved.

"The first game of the third set was quite important for me and maybe for her also and I got a little bit lucky because my forehand was catching the line but also I went for it, so maybe it's my reward."

Next up for Garcia is American Danielle Collins, who beat Sorana Cirstea 6-3 6-2.

--Reuters--