NEW YORK, United States (AFP) — World number one Carlos Alcaraz surged into the last 16 of the US Open on Saturday as second-seeded Aryna Sabalenka advanced safely in the women’s draw.

Alcaraz, looking to become the first man to successfully defend the title since Roger Federer in 2008, polished off British 26th seed Dan Evans 6-2, 6-3, 4-6, 6-3 in 3 hours, 11 minutes.

It was another stylish victory for the 20-year-old Spaniard who will face Italy’s Matteo Arnaldi in the fourth round on Monday.

The Spaniard kept Evans on the back foot with his booming forehand while delighting the Arthur Ashe Stadium crowd with several of his signature forehand drop shots.

Alcaraz also produced one of the shots of the tournament to clinch a decisive break in the fourth set, curling a logic-defying forehand up the line past Evans for a 4-2 lead.

Alcaraz, who will surrender his world number one ranking to Novak Djokovic at the end of this tournament, admitted he was motivated by matching Federer in defending his crown.

Alcaraz’s win keeps him on track for a repeat quarter-final against Italy’s Jannik Sinner, a year after the two men duelled in an epic five-hour five-setter that finished at 2:50 am, the latest finish in US Open history.

Sixth seed Sinner did his part to keep the rematch on course Saturday with a stylish 6-3, 2-6, 6-4, 6-2 win over Swiss veteran Stan Wawrinka.

Alcaraz’s last-16 opponent Arnaldi, meanwhile, advanced after upsetting 16th-seeded Briton Cameron Norrie, winning 6-3, 6-4, 6-3 in just under two hours.

Arnaldi, 22, had never played in the main draw of a Grand Slam before this season, with a brief run to the second round at Roland Garros his best performance in a major championship.

There was better luck for another member of Britain’s US Open contingent elsewhere though, with Jack Draper reaching the last 16 of a Grand Slam for the first time with a 6-4, 6-2, 3-6, 6-3 victory over American world number 89 Michael Mmoh.

The win was especially sweet for the 21-year-old Briton who was forced to withdraw with an injury at the same stage of the tournament last year.

Draper will face eighth-seeded Russian Andrey Rublev on Monday for a place in the quarter-finals.

Rublev, a quarter-finalist at last year’s tournament, defeated France’s Arthur Rinderknech 3-6, 6-3, 6-1, 7-5 to advance.

In the women’s draw, Australian Open champion Sabalenka maintained her dominant start to the tournament with a 60-minute demolition of France’s Clara Burel, winning 6-1, 6-1.

Meanwhile 17th seed Madison Keys became the second American woman into the last 16 after Coco Gauff, with a 5-7, 6-2, 6-2 win over Russian 14th seed Liudmila Samsonova.

Keys will play compatriot and third seed Jessica Pegula in the last 16.

Pegula outfought Ukraine’s 26th-ranked Elina Svitolina 6-4, 4-6, 6-2 to reach the fourth round.

China’s Zheng Qinwen meanwhile matched her best result at a Grand Slam — a fourth-round appearance at last year’s French Open — by rallying to beat Italy’s Lucia Bronzetti 6-3, 4-6, 6-4.

Zheng will face either Tunisia’s fifth seed Ons Jabeur or Marie Bouzkova of the Czech Republic in Monday’s fourth round.