Evans backs up marathon match with second-round win

British women's number one Katie Boulter was knocked out of the US Open second round in a "horrendous" defeat by Jessica Bouzas Maneiro, while Jack Draper claimed a straightforward win against Argentina's Facundo Diaz Acosta.

Boulter, the 31st seed, started strongly in the opening set, but ultimately fell to a 7-5 7-5 loss against Spain's Bouzas Maneiro, ranked 74th.

British men's number one Draper, meanwhile, moved seamlessly into the third round with a 6-4 6-2 6-2 success.

He could face Spain's Carlos Alcaraz if the French Open and Wimbledon champion defeats Dutchman Botic van de Zandschulp in Thursday's evening session on Arthur Ashe Stadium.

Boulter was heard saying "everything was horrendous" to her team at the side of the court.

"A really tricky match for me. Today I was a little too passive and I didn't quite play the way I wanted to play," Boulter told BBC Radio 5 Live.

"I felt like I needed to be more aggressive, and stand a little closer to the line. I allowed her to dictate a little bit more rather than putting my game on the court. It's a lesson to be learned for sure.

"These players are always going to have a go at you, you're the higher-ranked person, they're going to play better than their ranking.

"I have to be ready for that, and I have to be able to play my game better."

The 28-year-old has leapt up the rankings after a strong 18 months, but she has yet to reach the second week of a Grand Slam.

Coming into the US Open, Boulter admitted she was not as prepared as she might have been for the hard courts after playing at the Olympics on the Paris clay.

She had just three completed matches on hard courts before starting her campaign at Flushing Meadows.

Meanwhile, Bouzas Maneiro was ranked outside the world's top 150 at the start of the year and had played just one Grand Slam main draw match.

The 21-year-old has hit an impressive run of form, beating defending champion Marketa Vondrousova on the way to reaching the third round of Wimbledon before retiring injured against eventual winner Barbora Krejcikova.

She will play sixth seed Jessica Pegula in the third round after she beat fellow American and former Australian Open champion Sofia Kenin 7-6 (7-4) 6-3.

Draper has long been seen as the British successor to Murray at the top end of the men's game.

Having won his first ATP title at Stuttgart in June, the left-hander is aiming to go even further on the sport's biggest stages as the post-Murray era begins at the US Open.

Draper, who reached the fourth round last year in a career-best performance, broke Diaz Acosta in the third game of the match and saw out the first set from there, fending off three break points.

The 22-year-old's confidence grew and he cruised through the next two sets, offering up just one more break-point opportunity that Diaz Acosta failed to capitalise on.

Draper's reward is a potential third-round meeting with third seed Alcaraz, who he defeated at Queen's Club in June.

"Obviously was proud of my performance there and he hasn't lost to anyone on grass for the last couple of years so I must have done something right," Draper told Sky Sports.

"If I do play him I'll be expecting a very different Carlos Alcaraz out there to the one I played at Queen's, so I'm looking forward to that battle and let's see how that goes."