Alexander Zverev played a dangerous game on Friday, when he came back from the brink of defeat in the fourth set — and saved one match point at 4-5 in the decider — against Damir Dzumhur at Roland Garros for the 150th match win of his career (150-78).

Having led by a set and 3-1, the second-seeded German found himself staring down the barrel with Dzumhur serving for the match at 6-5 in the fourth set and later on serve at 4-5, 30/40 in the fifth set. But Dzumhur, the No. 26 seed from Bosnia and Herzegovina, blinked and Zverev fought back to complete a 6-2, 3-6, 4-6, 7-6(3), 7-5 win in just under four hours on Court Philippe-Chatrier.

Zverev, the winner of 19 of his past 21 clay-court matches, also came through a tense five-set victory over Serbia’s Dusan Lajovic in the Roland Garros second round. He will now recharge and prepare to face French No. 15 seed Lucas Pouille or Karen Khachanov of Russia in the fourth round, which equals his best Grand Slam championship performance (2017 Wimbledon).

Should Zverev’s older brother, Mischa Zverev, beat No. 6 seed Kevin Anderson of South Africa on Saturday, they would become the third pair of brothers to reach the fourth round at the same major championship in the Open Era (since April 1968) after Sandy Mayer and Gene Mayer at 1979 Wimbledon and Emilio Sanchez and Javier Sanchez at the 1991 US Open.

The 21-year-old Zverev captured ATP World Tour titles at the BMW Open by FWU (d. Kohlschreiber) and the Mutua Madrid Open (d. Thiem), in addition to a runner-up finish at the Internazionali BNL d’Italia in Rome (l. to Nadal). He has a 33-8 record on the season and leads the ATP Race To London, for one of eight spots at the Nitto ATP Finals in November, at The O2 in London.

So solid on serve was Zverev that through his first five service games, he’d only lost four points and as he took a 3-1 lead in the second set, with 44 minutes on the match clock, Dzumhur had barely challenged the smooth, powerful game of the German. Yet, in a 19-minute passage of play, Zverev lost focus on serve and Dzumhur found his rhythm to win five straight games.

Dzumhur continued to play closer to the baseline and bided his time. He regrouped after Zverev recovered from 0/40 at 3-3, by winning eight of the next nine points for a 5-4 advantage. He clinched the set, having saved two break points.

The 26-year-old took a 4-2 lead in the fourth set, and the prospect of a big upset was on the cards. Zverev kept fighting, tightened up his ball-striking and moved into the net to recover to 5-5. But at 5-6, the pressure began to tell. Zverev double-faulted on Dzumhur’s second break point and as the Bosnian went to his courtside chair, he contemplated serving for the biggest win of his career.

Dzumhur blinked, dropping his serve to love and never recovered in the tie-break, which saw Zverev win five of the first six points. Zverev carried the momentum into the decider, breaking in the first game, and after a brief rally from Dzumhur, the 21-year-old German moved into a 4-2 lead.

The drama hadn’t ended. Dzumhur dug deep and came within one point of winning four straight games. Zverev hung tough, in three lengthy games, and broke for a 6-5 lead prior to holding to 30 for a memorable win.

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You have to wonder, somewhere deep inside Alexander Zverev’s head, was there a doubt swirling around, saying “Here we go, again?”

Zverev has won three ATP World Tour Masters 1000 titles but never reached the quarter-final of a Grand Slam. And during his second-round match on Wednesday at Roland Garros, the 21-year-old fell behind two sets to one against Serbian Dusan Lajovic, who has been playing fine clay-court tennis, having reached the quarter-finals at the Mutua Madrid Open.

At the Australian Open, Zverev was in a similar spot, and faded. He led two sets to one against reigning Next Gen ATP Finals champion Hyeon Chung, but lost the last two 3-6, 0-6.

On Wednesday, however, perhaps Zverev turned a corner. The German came back to beat Lajovic 2-6, 7-5, 4-6, 6-1, 6-2. “I know if I’m doing the right things and if I do the right work I’ll win those long matches, and the success will come itself. This is not something I think of on a daily basis,” Zverev said.

Can he keep it going and reach the fourth round in Paris for the first time and match his best Grand Slam result (Wimbledon 2017)? The 21-year-old will face two-time ATP World Tour titlist Damir Dzumhur of Bosnia and Herzegovina.

The scrappy 5’9” Dzumhur survived a five-setter against Radu Albot of Moldova to make the third round, tying his best Grand Slam result. Dzumhur is 0-4 in third-round matches at Grand Slams.

Watch: Born Into War, Dzumhur’s Inspirational Journey To ATP Titlist

Novak Djokovic, 2016 champion, hasn’t dropped a set thus far in Paris, but will face his toughest test yet when he meets 13^th seed Roberto Bautista Agut for the eighth time. Djokovic leads their FedEx ATP Head2Head series 6-1, including all three matchups on clay. But the Spaniard beat Djokovic on a big stage, during the semi-finals of the Rolex Shanghai Masters in 2016.

Djokovic is trying reach the Round of 16 in Paris for the 12^th time. If he does, it will mark his 43^rd journey to a Grand Slam fourth round, and he will join Jimmy Connors in second place for the most fourth-round appearances at Grand Slam championships in the Open Era.

Most Grand Slam Round of 16 Appearances (Open Era)

Grigor Dimitrov’s path to his first Roland Garros Round of 16 becomes only harder on Friday. The fourth seed meets Spain’s Fernando Verdasco, who has beaten Dimitrov twice, including earlier this year at the BNP Paribas Open in Indian Wells.

Dimitrov escaped the second round 10-8 in the fifth set against Jared Donaldson of the U.S. Verdasco will try to reach the Round of 16 in Paris for the seventh time. Their FedEx ATP Head2Head series is tied at 2-2, and all four matchups have gone the distance.

Seventh seed Dominic Thiem and top French hope Lucas Pouille will play for the third consecutive day. Thiem exacted revenge against #NextGenATP Greek Stefanos Tsitsipas, who had beaten the Austrian last month in Barcelona, winning the fourth set on Thursday to close out their darkness-delayed match. Thiem plays Italian Matteo Berrettini for the first time.

Pouille needed only a set more on Thursday as well before advancing past Brit Cameron Norrie. The 15^th seed meets Russian Karen Khachanov for the third time this year (1-1). Win once more, and Pouille can celebrate his best showing at his home Grand Slam. Khachanov will look to return to the fourth round for the second consecutive year and match his best Grand Slam result.

In other action, eighth seed David Goffin faces 32^nd seed and home favourite Gael Monfils; 19^th seed Kei Nishikori plays a Frenchman for the third consecutive time in Gilles Simon; and 10^th seed Pablo Carreno Busta will play Italian Mario Cecchinato, who won his maiden ATP World Tour title at the Gazprom Hungarian Open in April.

Do not test Juan Martin del Potro’s knowledge of Roland Garros history. The Argentine, always prepared on the court, has been doing his homework off the court as well, as he showed on Thursday during his press conference.

Q. This is not a question about the match, but I wondered, do you know who Roland Garros was?
Del Potro: Yes.

Q. Can you tell us?
Del Potro: He was an aviator. A-ha. You’re surprised?

Q. You’re the first person in here that’s got that.
Del Potro: Because they asked me a few days ago and I Google it.

Del Potro was also sharp on the court on Thursday, winning his second-round match against Frenchman Julien Benneteau, who was playing his final match in Paris. The Argentine will next meet Spaniard Albert Ramos-Vinolas, who beat #NextGenATP Norwegian Casper Ruud. Read Report

Italian Fabio Fognini has troubled the greatest of players on a clay court. Fognini has beaten Rafael Nadal twice, and pushed the Spaniard to three sets earlier this month in Rome.

Italy’s No. 1, though, hasn’t let the close call at the Internazionali BNL d’Italia slow him down. The 18th seed is through to the third round at Roland Garros for the second consecutive year. Fognini sat down with ATPWorldTour.com to talk about his “ATP Firsts.” 

First pinch-me moment on the ATP World Tour
[In 2006], I was playing qualies at Buenos Aires, and I made it through the main draw and I was playing [Carlos] Moya and I lost 6-4 in the third, and then he won the tournament.

First thing I bought with prize money
I live in Italy, so I bought a house first of all, because I think it’s the most important thing in your life, and after that a car, nothing else… It’s a nice apartment, it’s 125, 130 metres squared.

More ATP Firsts: Donaldson | Schwartzman | M. Zverev

How fast have you gone in your car?
Well, I can’t tell you right now because…

Only up to the speed limit?
Of course.

First autograph/photo I got
When I was young, because I was living close to the Rolex Monte-Carlo Masters… with the school, we went there to watch the tournament. I had a picture with [Goran] Ivanisevic.

First pet
I had one when I was really young, when I was 4-15. I had one in Italy and when he died, I was really, really sad. I have a tattoo of him also. When he died, I made one. Good memory. Ralph…. [The tattoo is] on my hip… ‘Never Without You’ or something.

First time I flew first class
I think when I was Top 100. That was my goal. I had never flown business class because I had to do something before flying business class. So I think when I was Top 100, and it was the end of the year, I was No. 95, No. 94 and the next flight I flew to Australia main draw, I flew business… It was nice. Of course it’s a long trip, so it’s a lot of hours inside the plane. So it was nice.

Following his second-round win at Roland Garros (d. Giraldo 6-4, 7-5, 6-3), Roberto Bautista Agut didn’t avoid the media. He also didn’t dodge questions about his mother who passed away on 21 May, or the toll it’s taken on him at Roland Garros. The Spaniard is set to play 20th seed Novak Djokovic for a place in the fourth round.

“Honestly, being here helps take my mind off everything that’s happened over the past several days. I’d rather be playing here at Roland Garros than sulking at home,” Bautista Agut said. “I need to keep pushing on. Tennis is my life, these tournaments are my life. As soon as I was able, I got back to my usual routine and that’s helped so much. I played really well against Santiago and I felt great doing so. They say it isn’t good to bring your personal life or feelings on to the court and I agree, but I’m playing well so that’s all that matters.”

It’s hard to believe the 13th-seeded Bautista Agut is even competing at Roland Garros, let alone at the level he has performed so far. His determination has never been questioned, but the Spaniard has demonstrated the ultimate amount of heart so far in Paris.

“What has happened to me has been a terrible thing and it takes time to overcome,” Bautista Agut said. “All the support I’ve had from back home, from friends of my parents, from acquaintances … everyone is helping me through this. I’ve gained strength from their support. I’m thankful, from the bottom of my heart.”

Several of Bautista Agut’s comrades have rallied behind him during these difficult times, including fellow Spaniards Pablo Carreno Busta, Fernando Verdasco and Feliciano Lopez. The players sent their condolences, along with a flower wreath in a show of support. They also praised Bautista Agut’s courage to play and show a brave face when others might have folded.

“Things that happen off the court have an effect on a player when he steps on the court,” Carreno Busta explained. “People don’t realise it or consider it as a factor during a match, but a personal issue affects how a player performs and the outcome of a match. I’ve never gone through what Roberto is going through right now so I can’t say ‘I know how you feel.’ All I can say is he’s won a lot of support by soldiering on. I’m always happy for him, but even more so considering how much he has suffered.”

Verdasco credits Bautista Agut’s work ethic and will power as the reasons he’s been able to perform despite playing with a heavy heart.

“Honestly, if I put myself in his place, I don’t know if I’d be able to show up and play at Roland Garros,” Verdasco said. “Roberto is a very disciplined professional with solid routines and I think that helps him get into this ‘bubble’ and just detach from his personal issues. His mental fortitude is worthy of admiration.”

Lopez found himself in a similar situation as Bautista Agut a year ago.

“I do not know how I would have reacted,” Lopez said. “When I went through something similar when Casper [Fernandez] passed away, I was playing at Wimbledon. (Lopez’s father taught tennis to Fernandez in Spain.) I found out that he was very sick, that he had days to live, just as I was about to play a doubles match. I was lucky to be able to say goodbye to him, even though he was sedated. Every case is different and I wasn’t related by blood to Casper, but for me it was very hard. Right about now, he’d be sending me a text asking what I’m up to or just something about whatever. But now he’s gone.”

Bautista Agut is doing his best to stay focused on the task at hand, and is well aware he’ll need to perform at his best against Djokovic, whom he trails 1-6 in their FedEx ATP Head2Head series.

“Everything that has happened is taking its toll on me,” Bautista Agut said. “In the end, everything is linked to our profession. What we eat, how much we rest, the family issues … all that is linked to the life of the tennis player and when there are problems off the court, you have to put in that much more effort to achieve good results on the court.

“My match [against Djokovic] is obviously a difficult one, even more so considering the circumstances. All I can do is leave it all on the court.”