Top-ranked Iga Swiatek and U.S. Open champion Coco Gauff suffered early exits at the Miami Open.
Swiatek was defeated by Ekaterina Alexandrova 6-4, 6-2 on Monday night, while Gauff fell to No. 23 Caroline Garcia in three sets, 6-3, 1-6, 6-2.
In the men’s draw, top-seeded Carlos Alcaraz advanced to the round of 16 with a 6-4, 6-2 victory over Gael Monfils.
This marks Alexandrova's first win against a top-ranked player. She will face Jessica Pegula, who defeated Emma Navarro 7-6(1), 6-3, in the quarterfinals.
Alexandrova's victory over Swiatek is her second, following a 2021 win in Melbourne. Swiatek had won their three matches since then.
"We played quite a few times before, and sometimes it was three sets," Alexandrova said. "I think sometimes I was quite close to it, but still far away. Winning against her, of course, it feels great. I’m not sure if it’s a surprise or not, but I just worked quite hard on the court, and it paid off."
Swiatek rallied from a set down and beat Linda Noskova a day earlier. Against Alexandrova, she struggled.
"Disappointed for sure because I thought I was going to play better here in Miami," Swiatek said. "But she played an amazing match, and for sure, she was the better player out there today. Her serve, I had a hard time reading it. I got a little bit tense when I couldn’t return well."
Garcia defeated her second straight Grand Slam champion to reach Miami’s quarterfinals. She ousted four-time Grand Slam winner Naomi Osaka 7-6 (4), 7-5 on Sunday.
Garcia said it had been a while since she had a victory over a top-10 opponent like Gauff.
"You keep working and trying to stay positive about what’s coming, that it’s going to pay off," she said. "Sometimes, it’s very hard. But I’m lucky enough to have very good people behind me to help me and stay positive when I’m struggling."
"It means a lot to have this little reward and keep going in the tournament," she said.
Also moving into the quarterfinals was No. 4 seed Elena Rybakina, who defeated 17th-seeded American Madison Keys 6-3, 7-5.
Rybakina will next face No. 8 seed Maria Sakkari, who advanced to her second Miami Open quarterfinal when Anna Kalinskaya, seeded 22nd, withdrew with a right thigh injury.
Victoria Azarenka, who’s won the Australian Open twice, made the quarterfinals with a 7-5, 6-1 victory over Katie Boulter.
Yulia Putintseva also advanced, defeating No. 27 seed Anhelina Kalinina in straight sets, 6-4, 7-6 (5), and No. 5 seed Jessica Pegula beat Emma Navarro 7-6 (1), 6-3.
Alcaraz will next face Lorenzo Musetti, who beat Ben Shelton 6-4, 7-6 (5).
Alexander Zverev, the fourth seed, defeated Christopher Eubanks 7-6 (4), 6-3, and No. 9 seed Alex de Minaur beat Jan-Lennard Struff 7-6 (3), 6-4.