US Open Day 8: Quarterfinal matchups are set

It's Day 8 of the U.S. Open tennis tournament in Flushing Meadows, New York and round of 16 action in men's and women's singles.

Top-seeded Jannik Sinner has reached the U.S. Open quarterfinals by beating No. 14 Tommy Paul 7-6 (3), 7-6 (5), 6-1. Sinner shook off a slow start Monday night and came through in the clutch at the end of tiebreakers that decided the first two sets. Sinner is two weeks removed from being cleared in a doping case stemming from two positive tests in March. He moved into a showdown against 2021 champion Daniil Medvedev, the last past winner at Flushing Meadows still in the men’s field. Sinner is a 23-year-old from Italy who claimed his first Grand Slam title at the Australian Open in January by defeating Medvedev in the final in five sets after dropping the first two.

Jessica Pegula is back in the quarterfinals at the U.S. Open after a 6-4, 6-2 victory over Diana Shnaider. Monday's win put Pegula in her seventh Grand Slam quarterfinal. Now comes the hard part: Pegula is 0-6 at that stage over her career, and she plays No. 1 Iga Swiatek on Wednesday. The No. 6-seeded Pegula is on quite a run at the moment, having won 13 of her past 14 matches, all on hard courts. That included her second consecutive title in Canada and an appearance in the final at the Cincinnati Open, where she lost to No. 2 Aryna Sabalenka.

Also advancing were No. 22 Beatriz Haddad Maia and unseeded Karolina Muchova, the runner-up at the 2023 French Open and a semifinalist at the U.S. Open a few months later. The only previous men's champion still in the bracket, No. 5 Medvedev, moved into the quarterfinals, where he will take on Sinner. No. 25 Jack Draper became the first British man since Andy Murray in 2016 to get to the quarterfinals in New York. Draper will play No. 10 Alex de Minaur next.

Below are all of today's scores. (For Day 7 results click here.)

Day 8 men's singles, round of 16 results

Jack Draper (25), Britain, def. Tomas Machac, Czechia, 6-3, 6-1, 6-2.

Daniil Medvedev (5), Russia, def. Nuno Borges, Portugal, 6-0, 6-1, 6-3.

Alex de Minaur (10), Australia, def. Jordan Thompson, Australia, 6-0, 3-6, 6-3, 7-5.

Jannik Sinner (1), Italy, def. Tommy Paul (14), United States, 7-6 (3), 7-6 (5), 6-1.

Day 8 women's singles, round of 16 results

Karolina Muchova, Czechia, def. Jasmine Paolini (5), Italy, 6-3, 6-3.

Jessica Pegula (6), United States, def. Diana Shnaider (18), Russia, 6-4, 6-2.

Beatriz Haddad Maia (22), Brazil, def. Caroline Wozniacki, Denmark, 6-2, 3-6, 6-3.

Iga Swiatek (1), Poland, def. Liudmila Samsonova (16), Russia, 6-4, 6-1.

Day 8 men's doubles, third round results

Mate Pavic, Croatia, and Marcelo Arevalo-Gonzalez (4), El Salvador, def. Ivan Dodig, Croatia, and Adam Pavlasek (14), Czechia, 7-5, 7-6 (4).

Nikola Mektic, Croatia, and Wesley Koolhof (11), Netherlands, def. Harri Heliovaara, Finland, and Henry Patten (6), Britain, 6-2, 6-2.

Jackson Withrow and Nathaniel Lammons (13), United States, def. Rajeev Ram, United States, and Joe Salisbury (3), Britain, 7-6 (3), 6-3.

Michael Venus, New Zealand, and Neal Skupski (8), Britain, def. Tristan Boyer and Emilio Nava, United States, 3-6, 7-6 (3), 6-4.

Day 8 women's doubles, round of 16 results

Hao-Ching Chan, Taiwan, and Veronika Kudermetova (10), Russia, def. Harriet Dart, Britain, and Diane Parry, France, 6-4, 6-4.

Nicole Melichar-Martinez, United States, and Ellen Perez (5), Australia, def. Sara Sorribes Tormo, Spain, and Marie Bouzkova (11), Czechia, 6-2, 6-4.

Irina Khromacheva, Russia, and Anna Danilina, Kazakhstan, def. Olivia Nicholls, Britain, and Tereza Mihalikova, Slovakia, 6-4, 6-4.

Demi Schuurs, Netherlands, and Luisa Stefani (8), Brazil, def. Bethanie Mattek-Sands and Sofia Kenin (9), United States, 6-4, 6-3.

Day 8 mixed doubles, quarterfinal results

Rohan Bopanna, India, and Aldila Sutjiadi (8), Indonesia, def. Matthew Ebden, Australia, and Barbora Krejcikova (4), Czechia, 7-6 (4), 2-6, 10-7.

Aleksandar Kovacevic and Tyra Caterina Grant, United States, def. Sander Gille, Belgium, and Ellen Perez, Australia, walkover.

Sara Errani and Andrea Vavassori (3), Italy, def. Hsieh Su-wei, Taiwan, and Jan Zielinski (7), Poland, 6-3, 6-4.

Donald Young and Taylor Townsend, United States, def. Harri Heliovaara, Finland, and Anna Danilina, Kazakhstan, 6-7 (3), 6-3, 10-8.

Who are the betting favorites for the U.S. Open?

Jannik Sinner and Daniil Medvedev are strong favorites to win their fourth-round matches Monday and set up a U.S. Open quarterfinal rematch of Sinner's victory in the Australian Open final, according to BetMGM Sportsbook. The top-ranked Sinner is -650 in his match against No. 14 Tommy Paul, who is +400. Medvedev, the No. 5 seed and 2021 U.S. Open champion, is -800 against unseeded Nuno Borges, who is listed at +500. Women's No. 1 Iga Swiatek is at -900 for her fourth-round match against No. 16 Liudmila Samsonova, while a matchup of past French Open finalists has Karolina Muchova (-150) favored against No. 5 seed Jasmine Paolini (+115).

What is the U.S. Open schedule for the rest of the tournament?

—Sunday-Monday: Fourth Round (Women and Men)

—Tuesday-Wednesday: Quarterfinals (Women and Men)

—Sept. 5: Women’s Semifinals

—Sept. 6: Men’s Semifinals

—Sept. 7: Women’s Final

—Sept. 8: Men’s Final

What does the current bracket look like?

For live updates and latest bracket results, visit USOpen.org.