Alexander Zverev saved a match point and battled back to salvage a dramatic victory over Jenson Brooksby at the Mexican Open in what was the latest finish in tennis history.

Second seed Zverev – the defending champion in Acapulco - wrapped up a dramatic win at 04:55 local time after his own lengthy contest had followed two other epic three-setters earlier on the schedule.

Zverev at one stage looked like he was on the way out but ultimately triumphed 3-6 7-6 (12-10) 6-2 to book a second-round tie against Peter Gojowczyk.

The German had beaten Brooksby in a match that also went to a decider when they clashed at Indian Wells in October and he was pushed to the limit again in a battle lasting 200 minutes.

Having dropped the first set, Zverev had to fend off three break points at 3-3 in the second and saved a match point at 6-5 as part of an epic tie-break that went in his favour. 

Zverev was then more comfortable as he broke twice in the decider to seal victory, his American opponent paying the price for converting just one of his seven break-point opportunities in a match that made history for its late finish.

Elsewhere, Stefan Kozlov overcame cramps in the second set to outlast Bulgarian Grigor Dimitrov 7-6 (10-8) 5-7 6-3, with that match lasting three hours and 21 minutes.

John Isner sent down 29 aces and saved a match point as he trailed 5-2 in the third set, ultimately winning 7-5 6-7 (4-7) 7-6 (7-3) over veteran Fernando Verdasco in another epic topping the three-hour mark that helped to push back the start time for Zverev and Brooksby.

Seventh seed Taylor Fritz got past Frenchman Adrian Mannarino 6-3 6-3, while Dusan Lajovic knocked off Sebastian Korda 6-4 4-6 7-5 and eighth seed Pablo Carreno Busta beat Oscar Otte in straight sets.

At the Chile Open in Santiago, eighth seed Facundo Bagnis won 6-3 6-0 over Bernabe Zapata Miralles in the round of 32.

Brazilian Thiago Monteiro got past local Nicolas Jarry 7-6 (11-9) 6-4, while qualifier Juan Ignacio Londero and wildcard Thiago Seyboth Wild also progressed.

Novak Djokovic says he has room to improve despite easing past Taylor Fritz in straight sets to reach the semi-finals of the Paris Masters.

The world number one is competing in his first tournament since his dream of winning a calendar Grand Slam was ended by Daniil Medvedev in September's US Open final.

After beating Marton Fucsovics in three sets and then benefiting from a walkover against Gael Monfils in the last 16, Djokovic made light work of Fritz in Friday's quarter-final.

He sent down eight aces and was successful with 72 per cent of his first serves that landed on his way to a 6-4 6-3 victory.

However, Djokovic lost his serve on three occasions and, while happy with his overall display, the Serbian feels like there is more to come from his game in the French capital.

"I was absent from the tour for two months coming into this tournament," he said. "The last competitive match I played was in the US Open final, compared to the other guys playing one or two events prior to Paris.

"I knew that I needed to start well, with good intensity and put in a lot of hours on the practice court. But it's different when you play points in a competitive match.

"I am pleased with the way I played against Fucsovics and again today, though I did have ups and downs. I am not entirely pleased with the way I closed out the sets.

"I backed myself up with good returns and read Taylor's serve very well to get into rallies. I closed out the last couple of service games well and that's a positive."

Djokovic is aiming to win the Paris Masters for a record-extending sixth time in his bid to end the year as world number one for a record seventh occasion.

The Serbian will contest his 71st career Masters 1000 semi-final – four short of Rafael Nadal's record – against Hubert Hurkacz, who saw off James Duckworth 6-2 6-7 (4-7) 7-5.

With that victory, the world number 10 clinched the final singles spot at the ATP Finals in Turin later this month.

Hurkacz is the second Polish player to qualify for the event after Wojtek Fibak in 1976. It also means only European players will feature in the ATP and WTA Finals for the first time ever.

Saturday's other semi-final in Paris will be contested between Djokovic's US Open conqueror Medvedev and Olympic gold medallist Alexander Zverev.

Home favourite Hugo Gaston eliminated Pablo Carreno Busta earlier in the tournament but was always likely to face a tougher task against Medvedev.

So it proved, with the qualifier going down 7-6 (9-7) 6-4 in a match that saw Medvedev hit 13 aces to his opponent's one.

"When the atmosphere is against you, you need to face it," Medvedev said. "You need to try to win, no matter what.

"Even when it is against me, I think, 'I will try to beat my opponent and the crowd' because there is no other choice."

Zverev kept his momentum going with a 7-5 6-4 win over Casper Ruud in Friday's final contest, as he made it eight wins on the bounce.

The German held serve throughout, while breaking his opponent twice, to remain on course for a sixth final of 2021.

Marin Cilic won his 20th title on the ATP Tour by battling past Taylor Fritz in the final of the St Petersburg Open on Sunday.

A decade on from lifting the trophy for the first time, Cilic outlasted his American opponent 7-6 (7-3) 4-6 6-4 in a gruelling contest lasting two hours and 23 minutes.

It took the Croatian to four tournament wins on Russian soil, the 33-year-old having also twice won the crown in Moscow, while it also saw him join truly elite company in the men's game.

Only five other active male players have won 20 or more titles: Roger Federer (103), Rafael Nadal (88), Novak Djokovic (85), Andy Murray (46) and Juan Martin del Potro (22).

"Coming 10 years after winning in 2011 and also winning now, it's so, so special for me, especially this part of my career," said Cilic. "Having now a family, two sons, I want to absolutely dedicate this trophy to my newborn son."

Cilic had the chance to reach 20 titles last week in Moscow, only to lose in straight sets to home favourite Aslan Karatsev.

With 12 aces and 78 per cent of first-serve points won, the former world number three was aggressive in his efforts to make sure this was not another missed opportunity.

After taking the first set, Cilic twice led by a break in the second but allowed Fritz to level the contest and keep alive his hopes of a first title since Eastbourne two years ago.

Fritz went a break ahead in the decider but Cilic battled back to level at 4-4. A double fault from the world number 28 gave Cilic the chance to serve out the contest, and he duly obliged, converting his first match point with a volley.

Frances Tiafoe will face Alexander Zverev in the Vienna Open final after storming back from the brink of defeat to beat Jannik Sinner.

Sinner was on the cusp of another final after his triumph in Antwerp last weekend when he led 5-2 in the second set, but qualifier Tiafoe roared back to win 3-6 7-5 6-2 on Saturday.

Italian Sinner had moved into the last qualifying position for the ATP Finals by beating Casper Ruud to reach the semi-finals in the Austrian capital and appeared destined to extending his winning run.

The 49-ranked Tiafoe had other ideas, winning five games in a row to force a deciding set.

Tiafoe maintained his momentum, breaking twice in the final set to complete an astonishing comeback and leave seventh seed Sinner shellshocked.

Second seed Zverev earlier marched into his fifth tour-level championship match of the season with a 6-3 6-3 defeat of Spanish teenager Carlos Alcaraz.

Zverev, who this week secured a 50th tour-level win of the season and a 300th of his career, needed only 68 minutes to knock Alcaraz out.

The German said: "I finally found my rhythm from the baseline because I was really struggling.

"I didn't feel the ball well and I spent some time on the court after the match yesterday and warmed up for an hour and a half before the match today and I finally got it."

Marin Cilic and Taylor Fritz will do battle in the St Petersburg Open final following contrasting wins over Botic Van de Zandschulp and Jan-Lennard Struff respectively.

Cilic did not face a break point in a 6-3 6-3 victory over Dutchman van de Zandschulp, while fought back to defeat Jan-Lennard Struff 5-7 6-1 6-3.

ameron Norrie continued his sensational year by reaching his sixth and most significant final for the season with a straight-sets win over Grigor Dimitrov in the Indian Wells Masters semi-finals on Saturday.

The British 21st seed claimed his 46th win for the season, earning his sixth final appearance for the season, which is the equal most of any male player on tour, alongside Novak Djokovic.

Norrie will play Georgian 29th seed Nicoloz Basilashvili who defeated local Taylor Fritz in straight sets to reach a Masters 1000 final for the first time.

NORRIE TOPPLES TIRING DIMITROV

Norrie will also be making his maiden Masters 1000 final appearance after a 6-2 6-4 victory over 23rd seed Dimitrov in one hour and 26 minutes.

The 26-year-old Briton got ahead in both sets with an early break to set up the victory. Norrie moves ahead of Daniil Medvedev, Casper Ruud and Stefanos Tsitsipas and level with Djokovic for most final appearances this season.

"I've been playing a lot of big matches this year, which has helped," Norrie said during his on-court interview. "I feel like I am used to the big moments and the big matches.

"I'm feeling more and more comfortable and I feel like I am playing on my terms in key moments."

Dimitrov, who beat top seed Daniil Medvedev in an epic fourth round comeback, appeared spent physically with 31 unforced errors compared to Norrie's 19, with the Briton only hitting 12 winners for the match.

The triumph boosts Norrie's hopes of qualifying for the ATP Finals, with victory in the decider to see him move past Jannik Sinner into 10th position and within 125 points of the last position, currently occupied by Hubert Hurkacz.

BASILASHVILI MAKES MAIDEN MASTERS 1000 FINAL

Basilashvili overcame late nerves to secure his first-ever Masters 1000 final berth with victory over 31st seed Fritz in 7-6 (7-5) 6-3 in one hour and 41 minutes.

The 29-year-old, who had never won a main draw match at Indian Wells prior to this year's event, had 26-21 winners for the match, stepping up in the key moments to claim his breakthrough spot in a decider.

"It means a lot, especially at Indian Wells," Basilashvili said during his on-court interview. "People call this the fifth grand slam so it means a lot."

The Georgian was uncompromising and committed throughout, staving off three Fritz set points in the first set, before getting the lead in a tiebreak. Basilashvili converted his first break point for the match to lead 4-2 in the second set, although he spurned three match points with missed forehands, before sealing victory.

"For me, I'm first time experiencing semi-finals, finals and quarter-finals so I'm really tight," Basilashvili said. "It's natural but I try to get rid of it as much as I can. If I focus on my game and play, I can play good tennis."

Alexander Zverev rued a missed opportunity to win the Indian Wells Masters as he crashed out in the quarter-finals at the hands of home favourite Taylor Fritz.

American Fritz saved two match points to pull off an upset 4-6 6-4 7-6 (7-3) win over Olympic gold medallist Zverev.

Third seed Zverev was aware he had become hot favourite to triumph in California after Stefanos Tsitsipas crashed out to Nikoloz Basilashvili earlier on Friday, with US Open champion Daniil Medvedev already eliminated.

And the German was frustrated with his performance against Fritz, which left him unable to add to the Masters 1000 titles he has already won in Madrid and Cincinnati this year.

"It was just not really my day, to be honest," said Zverev, who had beaten Jenson Brooksby, Andy Murray and Gael Monfils to reach the last eight.

"I was close to winning, but the level of tennis was just not there for me.

"Mentally this is not easy for me. My next tournament is Vienna, so hoping I can deal with it well there, but right now I just want to go home.

"It was a very long season and I have played well but this one hurts because I knew that, after Stefanos lost this morning, I was kind of the favourite to win this tournament, but my tennis wasn't there yet."

Zverev had won 20 of his previous 21 matches on hard courts and led 5-2 in the deciding set.

But Fritz was not to be denied, firing 36 winners to secure the second top-five win of his career, with this triumph adding to impressive victories over Italian duo Matteo Berrettini and Jannik Sinner this week.

Fritz said: "This is the farthest I've ever been in a big tournament. 

"It is easily the best win of my life, against a really tough opponent on arguably the biggest match I could possibly play, so it's great.

"The biggest thing was match point down, I wanted to make him serve it out, so I just fought as hard as I could to hold that game.

"Then I got fortunate in his service game and from there I felt in control and felt really good under the pressure. I kept fighting. The crowd pushing me on meant so much.

"It is amazing. Especially the way that match ended with such high emotions with the crowd. The crowd was amazing and it is a dream come true."

Stefanos Tsitsipas and Alexander Zverev both crashed out in the quarter-finals on a day of upsets at the Indian Wells Masters.

Tsitsipas – the second seed – suffered a shock defeat to Nikoloz Basilashvili in a memorable outing for the Georgian in the Californian desert on Friday.

Afterwards, third seed Zverev was upstaged by Taylor Fritz in another boilover at the ATP Masters 1000 tournament.

BASILASHVILI BANISHES STEFANOS FOR MAIDEN MASTERS SF

In the biggest win of his career, 29th seed Basilashvili conquered French Open runner-up Tsitsipas 6-4 2-6 6-4.

Basilashvili's powerful groundstrokes from the baseline troubled Tsitsipas throughout as he reached his first Masters 1000 semi-final.

Prior to this year, Basilashvili had never won a main-draw match at Indian Wells in four previous appearances.

"I have played really great matches this tournament," said Basilashvili, who is the first Georgian in a Masters 1000 semi-final since Irakli Labadze in 2004. "I was not that happy with how I played today but I was happy with how I managed my stress levels.

"First time in the quarter-finals and it is a big court and Stefanos is a super tough player. I had to keep my physical levels and energy levels in a really good shape because I knew mentally I would be a little bit tight and stressed."

FRITZ SAVES MATCH POINTS TO UPSET ZVEREV

Next up for Basilashvili is 31st seed Fritz, who fended off two match points to surprise Olympic Games gold medallist Zverev 4-6 6-4 7-6 (7-3).

Fritz dropped the opening set and rallied from 5-2 down in the decider as he earned his second top-five victory of his career en route to his first Masters 1000 semi-final.

"I was really down and out but I found a way to put myself into it," Fritz said in his on-court interview. "I really wanted to make him have to close me out and I was able to get back into the match.

"Normally you would be so nervous in those situations and in the third set tie-break, but I felt so confident being aggressive, going after my game. It feels really great to play well with the pressure on."

It is the second Masters 1000 tournament of the season to feature three players in their first semi-final – Basilashvili, Fritz and Cameron Norrie – after the Miami Open.

Daniil Medvedev was ousted from the Indian Wells Masters, the US Open champion and top seed stunned by former world number three Grigor Dimitrov in a thrilling comeback.

Dimitrov had been a set and a double break down against the Russian star on Wednesday, before launching a remarkable rally for his first win over a top-two opponent since 2016.

Meanwhile, second seed Stefanos Tsitsipas and third seed Alexander Zverev both won to secure their spots in the last eight.

MEDVEDEV SHOCKED IN THE DESERT

Dimitrov roared back to triumph 4-6 6-4 6-3 over Medvedev, who had won 18 of his past 19 matches on North American soil.

Bulgarian star Dimitrov trailed 4-1 in the second set after dropping the opener before stunning the first-time grand slam champion midweek.

"I just felt something at 1-4 and I calmed myself down and started to take better decisions and started to control the pace of the game, which I really believed helped me," Dimitrov – the 23rd seed – said. "In the end it was just very solid and smart play."

Dimitrov finished the match with 25 winners, while he was also excellent at the net, helping him claim his first quarter-final appearance at an ATP Masters 1000 event this season.

Medvedev sent down 5-1 aces but only managed a 54 per cent first-serve percentage, while he also faced 10 break points across the match. Dimitrov won five games in a row to claim the second set.

"I don't remember myself losing three service games, even four service games ever, I guess, on hard courts," Medvedev said.

"That shows how slow this court is and the conditions, more like clay, I would say, which I don't like, because to lose serve four times is just unacceptable."

Dimitrov will face eighth seed Hubert Hurkacz in the quarter-finals after he got past Australian Open semi-finalist Aslan Karatsev 6-1 6-3.

Medvedev added: "Grigor played [the] second part of the match better than anybody did against me [at the] US Open that I won. Playing this level, I don't see him losing to anybody, but let's see the result."

ZVEREV MAKES STATEMENT WITH MONFILS WIN

Olympic Games gold medallist Zverev bulldozed his way past 14th seed Gael Monfils 6-1-6-3 en route to the last eight.

German star Zverev claimed his 20th win from his last 21 matches, needing just over an hour to dispatch Monfils.

Zverev claimed 19 of 25 points at the net, hitting 19 winners including 11 with his forehand, while converting four of eight break points.

"I felt well on the court today. Gael is someone I haven't beaten before, so I knew had to play my best tennis and I definitely was not far away," Zverev said during his on-court interview.

Zverev will take on American 31st seed Taylor Fritz, who defeated 10th seed Jannik Sinner 6-4 6-3.

TSITSIPAS OUTLASTS DE MINAUR

French Open runner-up Tsitsipas saw off a tough challenge from Australian Alex de Minaur to secure his spot in the quarter-finals 6-7 (3-7) 7-6 (7-3) 6-2.

Tsitsipas fought back from a set down to win against the 22nd seed, triumphing in two hours, 43 minutes.

Greek star Tsitsipas showed grit to outlast the tiring De Minaur and will face 29th seed Nikoloz Basilashvili after he knocked off fellow seed Karen Khachanov 6-4 7-6 (8-6).

"That was incredible the way I just stayed in the match," Tsitsipas said. "I had to go through so many difficulties in order to find a solution and I executed towards the end of the match."

There were further top-10 casualties, with sixth seed Casper Ruud also bowing out 6-3 6-3 to 11th seed Diego Schwartzman, who will meet Cameron Norrie in the quarters.

Andy Murray's stay in San Diego was short-lived, as the veteran fell to second seed Casper Ruud in straight sets Thursday. 

World number 10 Ruud prevailed 7-5 6-4 over the three-time grand slam winner, rolling to victory after a shaky start. 

Murray broke Ruud in the 22-year-old's second service game of the match, but could not maintain the advantage as Ruud converted five of six break points in the match. 

Ruud will face ninth seed Lorenzo Sonego, who defeated Sebastian Korda 6-4 6-3, saving six of seven break points against his own serve while converting all three of his chances on Korda's. 

Fourth seed Denis Shapovalov defeated Taylor Fritz 7-6 (9-7) 6-2, saving six set points in the process. 

The Canadian moves on to a quarter-final meeting with Cameron Norrie, who downed Daniel Evans 7-6 (7-3) 6-3. 

Grigor Dimitrov dominated August Holmgren 6-1 6-1 in 56 minutes, winning 83 per cent of his service points.

Dimitrov next faces Aslan Karatsev, who rallied to upset fifth seed Hubert Hurkacz 5-7 6-4 6-2. 

Brandon Nakashima has been one of the ATP Tour's hottest players throughout the hardcourt season, and he kept rolling Monday before a hometown crowd. 

The 20-year-old Nakashima rallied to defeat Italian veteran Fabio Fognini 6-7(5), 6-1, 7-5 in the first round at the San Diego Open, setting up a second-round matchup with top seed Andrey Rublev. 

After qualifying for the main draw at Wimbledon earlier this summer, Nakashima reached finals at Los Cabos and Atlanta in successive weeks, falling to John Isner in the latter finale. He then knocked Isner out of the US Open in the first round in straight sets. 

Monday, he won 80 per cent of the points on his first serve, dialling up eight aces to just one for Fognini, who also double faulted 11 times. 

Another Southern California native, Taylor Fritz, also advanced Monday, beating qualifier Salvatore Caruso 6-4 7-6 (2) to earn a second-round meeting with fourth seed Denis Shapovalov.

It was a welcome reprieve for the world number 39, who had lost five of his previous six matches dating to a quarter-final win over Reilly Opelka in Atlanta. 

Earlier, world number 24 Aslan Karatsev opened the day's action by defeating Federico Delbonis 6-1 7-5. 

One-third of John Isner's 15 career ATP titles have come at the Atlanta Open and the American will play for another Sunday against an up-and-coming countryman. 

Isner defeated Tayor Fritz 7-6 (7-4) 5-7 6-3 on Saturday to reach his first ATP Tour final this year after losing in the semis three times. 

One of those semi-final setbacks came last week in Los Cabos to Brandon Nakashima, who will be Isner's opponent Sunday. 

The 19-year-old Californian, ranked a career-best 115th, rallied to beat Finland's Emil Ruusuvuori 3-6 6-4 6-3 in the other semi. 

Nakashima defeated top seed Milos Raonic earlier this week and is riding high as he looks for his first ATP title. 

He is the first US teenager to reach the final in consecutive weeks since 18-year-old Andy Roddick won his first two ATP tournaments at Atlanta and Houston in the spring of 2001. 

Roddick's maiden title came in an earlier version of the Atlanta event. Since it was revived in 2010, Isner has won five of the 10 titles, with the first coming in 2013 about a week before Nakashima's 12th birthday.

"I didn’t know much about [Nakashima] prior to last week," Isner told the ATP's website. "But he kicked my ass last week, so we’ll see what I can do tomorrow.

"He’s 19 years old, that’s crazy. I was fishing on a boat when I was 19, here he is in the final of an ATP event.”

Fifth seed Taylor Fritz defeated compatriot fourth seed Reilly Opelka in a three-set epic in the quarter-finals at the Atlanta Open on Friday.

Fritz, who reached last week's Los Cabos Open semi-finals and is currently ranked 36th in the world, edged out Opelka 7-6 (7-5) 6-7 (3-7) 7-6 (7-4) in just under three hours.

The pair sent down a combined 48 aces, with Fritz claiming 25 of them, with all sets going to tiebreakers, with no breaks of serve.

Third seed Cameron Norrie was bundled out by Finnish world number 78 Emil Ruusuvuori in straight sets.

Norrie, who won last week's Los Cabos Open for his maiden ATP Tour title, was beaten 7-6 (7-1) 6-3 by the Finn.

Ruusuvuori will take on teenager Brandon Nakashima in the semi-finals, after the American – who was runner-up to Norrie in Los Cabos - beat Jordan Thompson 7-6 (7-5) 7-5.

Sixth seed John Isner sent down 30 aces as he got past Australian qualifier Chris O'Connell 7-6 (7-5) 6-7 (3-7) 6-4.

Top seed Milos Raonic saw his stay at the Atlanta Open come to an early end with a three-set defeat to American Brandon Nakashima on Wednesday. 

The 19-year-old Californian Nakashima, ranked 115th in the world, prevailed 5-7 6-3 7-6 (7-4) over world number 22 Raonic in their first meeting. 

The big-serving Canadian had 10 double faults to go with his 27 aces, while Nakashima did not commit one double fault and managed 13 aces. 

It was the latest in a string of recent wins over established players for Nakashima, who stunned Sam Querrey and John Isner last week at Los Cabos before falling to Cameron Norrie in the final. 

Nakashima next faces Australia's Jordan Thompson, who beat Peter Gojowczyk of Germany 7-6 (8-6) 6-4 to reach the quarter-finals. 

In the other half of the draw, fifth seed Taylor Fritz rallied to defeat fellow American Steve Johnson 6-7 (5-7) 6-4 6-1 in a rematch of a quarter-final at Los Cabos, also won by Fritz. 

Fritz will face countryman Reilly Opelka, who outlasted Bjorn Fratangelo 7-6 (7-3) 7-6 (7-4). The 6-foot-11 Opelka pounded 25 aces to just three double faults, winning 84 per cent of his service points. 

Sixth seed John Isner sent down an Atlanta Open joint record 36 aces as he overcame countryman Jeffrey John Wolf in three sets on Tuesday.

World number 35 Isner was dominant on his first serve, winning 6-4 6-7 (3-7) 6-4 to claim a spot in the second round where he will face Jack Sock who beat Ricardas Berankis in three.

Isner's 36 aces equaled the previous Atlanta Open record set by Sam Querrey on Monday in his three-set win over Peter Gojowczyk.

American fifth seed Taylor Fritz also progressed on Tuesday with a 6-3 6-4 victory over Russian Evgeny Donskoy.

French seventh seed Benoit Paire got past Japan's Yasutaka Uchiyama 7-5 6-7 (2-7) 6-4, while enigmatic Australian Nick Kyrgios beat South African Kevin Anderson 7-6 (7-4) 6-3.

Teenage American talent Brandon Nakashima knocked out Trent Bryde, while Australian Chris O'Connell beat Denis Kudla and Finland's Emil Ruusuvuori got past Mackenzie McDonald 7-6 (7-3) 7-5.

Nakashima, who got a special exemption entry into the Atlanta Open, next takes on top seed Milos Raonic.

Novak Djokovic returned following a rain delay to beat Taylor Fritz in the second round of the Internazionali BNL d'Italia after Felix Auger-Aliassime dumped Diego Schwartzman out.

Djokovic, playing his first match since a shock loss to Aslan Karatsev in the semi-finals of the Serbia Open on home soil, dispatched American Fritz 6-3 7-6 (7-5) on Tuesday.

The world number one, who missed the Madrid Open, won the first three games of the match and saved both break points he faced in the opening set.

Fritz had broken for a second time in the second set to level at 5-5 when the rain came at the Foro Italico, but the top seed was able to come back out on court to finish off the job and will face Cameron Norrie or Alejandro Davidovich Fokina in the third round.

Auger-Aliassime secured the third victory over a top-10 opponent in his fledgling career, beating eighth seed Schwartzman 6-1 6-3 to move into round three.

The 20-year-old Canadian only needed 64 minutes to send the Argentine packing, converting five of the six break-point opportunities he earned.

Matteo Berrettini saw off Nikoloz Basilashvili 4-6 6-2 6-4 in the first round less than 48 hours after the Italian was beaten by Alexander Zverev in the Madrid Open final.

Gael Monfils was unable to win his first match since the Australian Open, as Lorenzo Sonego got the better of the fit-again Frenchman, who had been sidelined with a calf injury, 6-4 5-7 6-4.

Reilly Opelka moved into the last 16 with a 6-4 6-4 defeat of Lorenzo Musetti, while Pablo Carreno Busta's withdrawal due to lower back pain handed Kei Nishikori a walkover.

Daniil Medvedev and David Goffin were unable to start their second-round matches due to the weather in Rome.