To say Ben Shelton’s first trip outside of the United States has been a success would be an understatement.

When the American set off for Australia, he was stepping into the unknown. Fast forward one month and the 20-year-old is playing like a seasoned pro, with his victory against J.J. Wolf propelling him into the quarter-finals on debut at the Australian Open.

Speaking after his five-set win on Monday, Shelton admitted that his run in Melbourne has surpassed all expectations.

“[It is] definitely a surprise,” Shelton said. “I got on the plane with no expectations. I know that it’s very hard to adjust to Australia from the United States just with the jetlag, time change and everything. It being my first time, never being out of the United States, I knew it would be a struggle.

“But I think it has helped me a little bit having that expectation or the feeling that I have to perform, but being able to just go out there, be myself and play free. I think that’s been a big contribution to my success.”

One year ago, Shelton was No. 569 in the Pepperstone ATP Rankings and still in college at the University of Florida. The lefty was not yet in the top spot of his team’s lineup. Following his victory against Wolf, the 20-year-old is up to No. 43 in the Pepperstone ATP Live Rankings.

“I feel great. It’s been a pretty special week for me,” said Shelton, who is still taking online college classes. “Definitely a lot on my plate, playing my first Grand Slam outside of the United States, starting school this week. It’s been a lot. But I’m really enjoying it so far.

“Each match that I’ve won here has felt the same. It’s a mixture of joy, relief. I just have that feeling of ecstasy. When the last ball lands, I did it. To be able to do that on this stage four times in a row, that feeling over and over again, has been pretty cool.”

Shelton made his Grand Slam debut at the US Open in September, losing against Nuno Borges as he struggled physically in a five-set, first-round defeat. Despite playing 16 sets across his four matches in Melbourne, the 20-year-old feels ready to push further when he takes on Tommy Paul in the quarter-finals, marking the rapid progress he has made fitness-wise.

“I think I’m in a pretty good place physically,” Shelton said. “I think that since the last Grand Slam I played, in the US Open, where I was really struggling, five sets in the heat, I barely survived. My fitness wasn’t near what I needed it to be. So I’ve worked really hard these past five or six months to get to where I want to be.

“I’m still not there. There’s still a lot of improvements that I can make. I’m young and I have time to make those improvements. But I feel pretty confident in my ability in the upcoming hopefully matches that I can go out there and I can last five sets with anybody. I’m definitely taking care of my body the right way, trying to bring myself to peak performance for these matches.”

The men’s singles field at the 2023 Australian Open is down to eight and Tuesday’s action sees half the remaining competitors bidding for a semi-final spot.

Stefanos Tsitsipas seeks to halt the dream run of Jiri Lehecka in the night session on Rod Laver Arena, where the third-seeded Greek is chasing his third consecutive Australian Open semi-final appearance. Earlier on Tuesday, Karen Khachanov and Sebastian Korda are in action, with both players appearing in their maiden Australian Open quarter-final.

ATPTour.com previews the quarter-final matchups on Day 9 at Melbourne Park.

View Schedule | View Singles Draw | View Doubles Draw

[3] Stefanos Tsitsipas (GRE) vs. Jiri Lehecka (CZE)

Tsitsipas passed the toughest test of his Melbourne run on Sunday, holding off a furious charge from Jannik Sinner in a 6-4, 6-4, 3-6, 4-6, 6-4 victory. The Greek credited his late surge to his ability to relax and reset, with a loose arm helping him find the groove on his serve as he made 24 of 26 first serves in the final set.

With the stakes even higher in the quarter-finals, Tsitsipas is not feeling any added pressure as he seeks his first Grand Slam title.

“I play my game. Titles come if I play good. That takes care of itself,” he said in a post-match press conference. ”If you’re able to play the best you can produce on the court, I feel like the rest just follows naturally. It’s a natural flow of things.”

After falling in the first round of the 2022 US Open — where he admitted the weight of playing for the top spot in the Pepperstone ATP Rankings affected him — Tsitsipas again could become World No. 1 by lifting the trophy in Melbourne.

WHAT A SHOT 😤@steftsitsipas | @AustralianOpen | #AusOpen pic.twitter.com/vZZIC5HaVF

— ATP Tour (@atptour) January 22, 2023

Standing in his way is 21-year-old Lehecka, who has moved up 32 places to No. 39 in the Pepperstone ATP Rankings behind his Melbourne run. Prior to this fortnight, he was 0-4 at the majors, losing in the first round of each in 2022. Now, he will look to earn his first win against Tsitsipas, after a 4-6, 6-4, 6-2 loss to the Greek last February in the Rotterdam semi-finals.

“I’ll be super excited,” Lehecka said of the matchup, before it was confirmed by Tsitsipas’ victory. “I will go for that revenge, for sure. I know that he will remember how we played last year in Rotterdam. One set I was the better player on the court. Then he overtook the match.

“But I think that he will remember, and he will know what my strengths are. He will feel that I can get him under pressure. At the same time, I know that he’s a great player… I know how to play against him. Of course, the match last year from the Rotterdam semi-finals will help me a lot, how to imagine some things, how it went over there, how to prepare for this next matchup.”

Lehecka has taken huge strides since then, and and he has been a different player since his run to the title match at the Next Gen ATP Finals in November.

“I think at the Next Gen Finals, I finally found my game and I found how to play what I want to play, and how to beat great guys in big stadiums,” he said. “I saw all the media attention over there. It was kind of a [gateway] to the big tennis.”

It doesn’t get much bigger than facing the World No. 4 in Rod Laver Arena.

[18] Karen Khachanov vs. [29] Sebastian Korda (USA)

If Khachanov and Korda’s previous Grand Slam meeting is anything to go by, the Rod Laver Arena crowd could be in for a wild ride on Tuesday afternoon. In the fourth round at Wimbledon 2021, Khachanov edged the American 3-6, 6-4, 6-3, 5-7, 10-8 to reach his second major quarter-final.

Korda has since defeated Khachanov twice to establish a 2-1 lead in the pair’s ATP Head2Head series, but both players enter Tuesday’s clash flying high having already hit their own respective Grand Slam milestones this fortnight.

After breezing past Yoshihito Nishioka for the loss of just six games in Melbourne, Khachanov has now reached the quarter-finals at all four Grand Slams. The 26-year-old has no desire to let up as he bids to move past Korda and equal his best performance at a major, his semi-final run at last September’s US Open.

“Obviously [reaching the quarter-finals at all four Slams] gives me some kind of compliments on what I achieved so far,” said Khachanov after routing Nishioka 6-0, 6-0, 7-6(4) on Sunday. “I’m just happy to do it. Hopefully I can continue even further on even bigger things.”

In contrast, Tuesday’s clash will be Korda’s maiden Grand Slam quarter-final, although the 22-year-old has already shown remarkable progress in a 2023 season that is just over three weeks old. He held championship point before falling to a narrow defeat against Novak Djokovic in the final of the Adelaide International 1 in early January, and he believes that past disappointments in close matches against top players have helped him this year in Melbourne, where he notched a statement three-set win against Daniil Medvedev in the third round.

“I think I’ve had a tough match with Rafa [at Indian Wells last year], serving for it a couple times,” said Korda, speaking after edging Hubert Hurkacz in a five-set fourth-round thriller on Sunday. “Match point with Djokovic [in Adelaide]… I think all those little moments that I’ve gone through, kind of learning from them, staying patient, staying positive, going through the process. I think [they] have really helped me going forward.”

In Doubles Action…

The men’s doubles draw also reaches the quarter-final stage Tuesday, when third seeds Marcelo Arevalo and Jean-Julien Rojer bid to reach the Australian Open semi-finals for the first time. They take on unseeded French duo Jeremy Chardy and Fabrice Martin on Kia Arena, with both teams yet to drop a set after their first three matches in Melbourne.

In Day 9’s other last-eight clash, Hugo Nys and Jan Zielinski hope to back up their third-round upset of second seeds Rajeev Ram and Joe Salisbury when they face another all-French pairing, Benjamin Bonzi and Arthur Rinderknech.

The Americans are out in force in the 2023 Australian Open quarter-finals, and among them is Tommy Paul.

The 25-year-old delivered a rock-solid fourth-round performance Monday at Melbourne Park, where he prevailed 6-2, 4-6, 6-2, 7-5 in a clean-hitting matchup against Roberto Bautista Agut to reach the last eight of a Grand Slam for the first time.

”It was a really physical, tough match,” said Paul after his hard-earned victory on Margaret Court Arena. “Any time you play Bautista it’s going to be a war. So I was prepared for that match and I thought I executed really well today. It’s always fun playing on this court, I think it was my third time playing here and it’s always a blast.”

.@TommyPaul1 is into the quarter-finals at a Grand Slam for the first time 🙌@AustralianOpen | #AusOpen
pic.twitter.com/mqpYVc2fJ6

— ATP Tour (@atptour) January 23, 2023

Paul was a constant menace to the Spaniard in his return game throughout the pair’s fifth tour-level meeting. He converted six of 15 break points to maintain the upper hand for much of the match, despite a second-set Bautista Agut revival. Against a player renowned for his ability to regularly hit through opponents, Paul outhit Bautista Agut by 58 winners to 35 to seal his 11th-straight victory against Spanish opponents in three hours and 19 minutes.

“I felt like I was running a lot, so I definitely wanted to be on offence a little bit more there towards the end of the match,” added Paul. “I feel like the first set, I was kind of controlling everything, and then he was finding so many forehands later in the match and making me run. That wasn’t a lot of fun, but I’m happy to get through that one.”

The win improved Paul’s record for 2023 to 5-1 and reduced his ATP Head2Head series deficit against Bautista Agut to 2-3. As a result of his run in Melbourne so far this fortnight, the American has risen seven spots to No. 28 in the Pepperstone ATP Live Rankings.

Paul takes on Ben Shelton next after the 20-year-old downed J.J. Wolf in five sets to extend his dream Australian Open debut. With Sebastian Korda also into the quarter-finals, this marks the first time since 2000 that three American men have reached the last eight in Melbourne — and the first time at any Slam since the 2005 US Open.

“I think he [Shelton] was down two-sets-to-one when I came on court, so I had no idea who I would play if I won, but I was happy with either [Shelton or Wolf],” said Paul. “I’m really happy to be playing an American in the quarters. There’s going to be an American in the semis for sure, so I’m really excited for that, and hopefully you guys can come out and watch that one too.”

The first Top 10 matchup of the 2023 Australian Open exceeded its blockbuster billing as Andrey Rublev edged Holger Rune 6-3, 3-6, 6-3, 4-6, 7-6(11-9) on Monday in Rod Laver Arena.

In a scarcely believable fifth set, Rublev fought back from 2-5, saved two match points on serve at 5-6, then clawed back from a 0/5 hole in the decisive tie-break. On his third match point, he clinched victory in the cruelest of ways from the Dane’s perspective, when a net cord dribbled over the net.

“I never in my life was able to win matches like this,” Rublev said post-match. “This is the first ever time that I won something like this, especially in a very special tournament, the Australian Open, to be in the quarter-finals. So it’s something I will remember for sure all my life. I have no words, I am shaking and happy.” 

Amazing Andrey!@AndreyRublev97 comes from 0-5 down in the match tiebreak to defeat Holger Rune in a classic at Rod Laver Arena.#AusOpen • #AO2023 pic.twitter.com/Ms3S4Vi4wN

— #AusOpen (@AustralianOpen) January 23, 2023

Over the course of three hours, 37 minutes, the twists and turns started early and began to build toward the climax early in the fourth set. Rune was struggling physically as he saved two break points in its first game, but after a visit from the trainer, he found and stole the set — but only after failing to serve it out at 5-3.

The Dane was at his best early in set five, combining big hitting with athletic defending, ultimately converting on his fourth break chance of the set to lead 3-1. But once again, he could not serve out the set — and this time, what would have been the match — as Rublev won 12 of 13 points to roar back from 2-5.

It was far from the last time the fifth seed would have his back to the wall, but he answered the call again to book his place in the Melbourne quarter-finals, where he will play Novak Djokovic or Alex de Minaur. It is Rublev’s seventh Grand Slam quarter-final, and his second at the Australian Open, though he has yet to advance beyond that stage at a major.

Both Rublev and Rune entertained the Laver crowd with big hitting and clever shotmaking, but they could not seem to find their best tennis at the same time. With the pressure ratcheted up in the final-set tie-break, Rune found early success as he frustrated his opponent with a steady baseline strategy, baiting him into errors. 

With the match once again slipping away, Rublev turned up the heat as he imposed his will down the stretch, flipping the tie-break with a run of six straight points to lead 9/7. After Rune showed his fighting spirit by saving two match points — one of them with a brilliant backhand pass after desperate defending — Rublev landed the softest of final blows with the friendly net cord.

“When I hit it in the beginning, I saw how the ball clearly hit the net and was on my side,” he said of the moment time stood still as the ball hung in the air. “Sometimes it can be a bit higher, and then maybe [it goes over]. But that ball was exactly on my side and I don’t know how [it] went over.”

Rune, who was making his second appearance in Melbourne, did not drop a set en route to the fourth round. However, he was unable to move past Rublev and reach his second major quarter-final.

“I think it was a great match,” said Rune, who advanced to the last eight at Roland Garros last season. “I think I had all the chances that I could wish for. I just didn’t close him. I had 5-2 in the fifth, 5-3 in the tiebreak. I thought I played strong from the fourth set. I raised my game a little bit.

“I think I took my chances well, just not in the fifth set. That is where it matters. He was better than me in the important moments. Congrats to him.”

Novak Djokovic looks to avoid an upset against home favourite Alex de Minaur when they meet in the fourth round Monday at the 2023 Australian Open. Also on Monday’s card is a Rod Laver Arena showdown which will decide the clash of Top-10 seeds Andrey Rublev and Holger Rune. And the Americans look to continue their strong performance in Melbourne, where Tommy Paul, J.J. Wolf, and Ben Shelton are all competing in the round of 16.

ATPTour.com looks at what to watch on Day 8 at Melbourne Park as players bid for a quarter-final spot.

[4] Novak Djokovic (SRB) vs. [22] Alex de Minaur (AUS)

With a potential 10th Australian Open crown in sight, the fourth seed must first get past a tricky test under the lights on Rod Laver Arena as home hope de Minaur looks to spoil the Serbian’s chances in their first meeting.

Djokovic, who hasn’t lost in Melbourne since 2018 (did not play in 2022), is bidding to record his 25th consecutive match win at the Australian Open and equal his longest streak of victories at the season’s first Slam.

The 21-time major champion, who has dealt with a hamstring injury since the ATP 250 event in Adelaide earlier this month, has dropped just one set through his first three matches and remains optimistic that the injury won’t hamper his title chances.

“It requires a lot of energy that is being spent from my side mentally and physically,” Djokovic said of his injury problem that’s forced him to play with his left hamstring strapped this fortnight. “To deal with the match with my opponent and also not the ideal physical state. It is what it is. It’s a kind of circumstance that you have to accept. I’m just very grateful that I’m actually able to play. The way it looked just before the tournament started, I thought that it wouldn’t be possible. I’m still here and still holding on.”

Should de Minaur stun Djokovic, the Aussie would equal his best Grand Slam performance (2020 US Open QFs). With the home crowd behind him, de Minaur has reason to believe he can add to this year’s Australian Open upset list. The Sydney native recorded his first victory against a Top-5 opponent in November, when he defeated Daniil Medvedev at the Rolex Paris Masters and followed it up with a win against Rafael Nadal at the season-opening United Cup.

[5] Andrey Rublev vs. [9] Holger Rune (DEN)

After both men cruised through their third-round matches, Monday’s contest is sure to be a thrilling battle from the baseline. On Saturday, Rublev crushed 60 winners to take down Great Britain’s Daniel Evans. The Danish teen will look to counter Rublev’s heavy-hitting with his own power and precision.

Rublev is bidding to reach the quarter-finals of a Slam for a seventh time and second Down Under. A four-time titlist this past season, Rublev produced strong performances in the opening three rounds against 2020 finalist Dominic Thiem, Emil Ruusuvuori, and Evans. Rublev is seeking revenge from this past season, when Rune defeated him at the ATP Masters 1000 event in Paris en route to collecting the biggest title of his career.

Rune, 19, hasn’t given up a set this tournament. The teenager is aiming to become the youngest man to reach the quarter-finals at the Australian Open since 1990 (Andrey Cherkasov). A 2022 Roland Garros quarter-finalist (l. Ruud), Rune is looking to equal his best Grand Slam performance in just his second appearance in Melbourne.

[24] Roberto Bautista Agut (ESP) vs. Tommy Paul (USA)

Although the Spaniard leads the ATP Head2Head series 3-1, ‘RBA’ will seek revenge on Margaret Court Arena after the American won their most recent encounter at the Rolex Paris Masters.

Bautista Agut is bidding to reach the quarter-finals in Melbourne for the second time and equal his best Australian Open result. Should he advance, he would become the fifth Spanish man in the Open Era to reach the quarter-finals at the Australian Open on multiple occasions (Nadal, Ferrer, Moya, Ferrero).

After cruising through the opening round, Bautista Agut came back from two sets to love down to defeat American Brandon Holt and in the third round the 34-year-old needed three hours, 29 minutes to survive Andy Murray.

Paul looks to carry his momentum from his Saturday victory, when he conceded just eight games to countryman Jenson Brooksby. The World No. 35, who has equalled his best Grand Slam result (Wimbledon 2022), is looking to join Sebastian Korda and the winner of Shelton and Wolf in the quarter-finals. The last time three Americans reached the last eight at the Australian Open was 2000 (Sampras, Agassi, Woodruff).

Ben Shelton (USA) vs. J.J. Wolf (USA)

The all-American clash between Ben Shelton and J.J. Wolf features two former college standouts. The winner will become the fourth man in the past 20 years to reach the quarter-finals on his Australian Open debut. With Sebastian Korda already through to the last eight, it is guaranteed that two American men will reach the quarter-finals in Melbourne for the first time since 2007.

Shelton, who won the 2022 NCAA singles title at the University of Florida, hopes to continue his dream run in just his second Grand Slam appearance. After surviving a five-set opening round match against Zhang Zhizhen, the American solidified victory in straight sets against Nicolas Jarry and Alexei Popyrin.

Boasting a heavy serve and the ability to hit winners from all corners of the court, Shelton would rise into the Top 50 in the Pepperstone ATP Live Rankings with a victory over his countryman. This past season, the 20-year-old made quick progress on the ATP Challenger Tour and became the youngest player to win three Challenger titles (Charlottesville, Knoxville, Champaign) in as many weeks.

Wolf, 24, is aiming to improve on what is already his best major performance. The former Ohio State University star has given up just one set all week en route to taking out Jordan Thompson, Diego Schwartzman, and Michael Mmoh.

In Doubles Action…

Top seeds Wesley Koolhof and Neal Skupski kick off Kia Arena action against Nikola Cacic and Aisam-Ul-Haq Qureshi. On Court 3, third seeds Jean-Julien Rojer and Marcelo Arevalo meet Dutch duo Robin Haase and Matwe Middelkoop. 2020 Australian Open champions Rajeev Ram and Joe Salisbury continue their title quest against Polish team Hugo Nys and Jan Zielinski.