Botic van de Zandschulp, U.S. Open qualified, has reached the quarterfinals after a 6-3.6-4. 5-7.5-7.5-7.6-1 victory over No. 11 Diego Schwartzman at Louis Armstrong Stadium.

Van de Zandschulp won in four hours, twenty minutes. He joins Nicolas Escude (1999), and Gilles Muller (2008) as the only men’s qualifier to make it to Flushing Meadows. He had already lost the first set in each of his three previous matches.

Van de Zandschulp was one of three U.S. Open qualifiers who reached the fourth round, the first time the tournament had kept qualifying records since 1982. Three male qualifiers from any Grand Slam tournament reached Week 2 for the first time since 1995 French Open.

The Dutch qualifier, aged 25, had already eliminated No. In the second round, Casper Ruud was seeded 8.

Qualifiers have had a busy season. Russian Aslan Karatsev qualified for this year’s Australian Open semis.

Schwartzman, friends with actor Ben Stiller, lost in the first round last year at Flushing Meadows. The 29-year old Argentine was a quarterfinalist at the U.S. Open in 2017 and 2019.

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1:40 p.m.

No. No. 5 seed Elina Stvitolina defeated Simona Halep, two-time Grand Slam champion, 6-3 and 6-3 to reach the quarterfinals of the U.S. Open.

Svitolina has never been a Grand Slam champion. Svitolina had previously lost to 12th-seeded Halep twice in majors.

Svitolina, the Olympic bronze medalist has emerged at Flushing Meadows as a serious contender. Svitolina has not dropped a set during the tournament.

Naomi Osaka is No. Both No. 1 seed Ash Barty (who was defeated Saturday night by Shelby Rogers) are out of the women’s draw.

No. Aryna Sabalenka, 2nd seed, plays Elise Mertens in the fourth round later Sunday.

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12:25 p.m.

Jack Sock resigned from men’s singles after suffering an injury during his singles match against Alexander Zverev.

Sock was seen to have suffered a leg/groin injury in the early stages of the match. Zverev was leading 3-6, 6-1, 6-3, and Sock took a 2-1 lead.

Sock posted on Instagram that he had taken a minor step back in preparation for a major return.

Sock was to face Neal Skupski in doubles. Dominik Koepfer’s team won the walkover. Emil Ruusuvuori won the match.

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11:15 a.m.

Leylah Fernandez is crowned another U.S. Open champion in her first match since beating Naomi Osaka. Fernandez faces No. 2106 champion Angelique Kerber. Fourth round action at the U.S. Open: 16-seed Angelique Kerber

Fernandez (18 years old), a Canadian native, was a star in Flushing Meadows. Fernandez defeated Osaka in the final two sets to win the French Open junior title.

Osaka and No. Osaka and No. 1 seed Ash Barty were both knocked out Saturday night by Shelby Rogers. No. No. 2 seed Aryna Sabahlenka will play Elise Mertens in the fourth round.

The No. 1 man in the world. 2 Daniil Medvedev portrays Daniel Evans, and Frances Tiafoe, an unseeded American, tries to continue his run by playing No. 12 Felix Auger-Aliassime.

Carlos Alcaraz and Fernandez are both only 18 years old, and they play on Sunday. Alcaraz defeated No. To advance, Alcaraz knocked out No.