Nuno Borges will face reigning champion Carlos Alcaraz in the second round of the Barcelona Open after a 6-2 6-3 triumph over Ilya Avashka on Monday.

Borges created a remarkable 20 break points, converting only five but still comfortable against his 61st-ranked opponent.

That sets up a clash with number one seed Alcaraz, who beat Pablo Carreno Busta in the 2022 final.

Ben Shelton's 7-5 6-4 success over countryman Mackenzie McDonald means he will take on Casper Ruud, while Bernabe Zapata Miralles will play Roberto Bautista Agut in an all-Spanish second-round affair after earning a routine 6-2 6-2 win over unfancied Attila Balazs.

Meanwhile, Emil Ruusuvuori beat Alexander Bublik in Barcelona for a second straight year to set up a second-round meeting with fifth seed Frances Tiafoe.

At the BMW Open in Munich, 2022 winner Holger Rune will open his defence against Yannick Hanfmann after the German battled from a set down to beat Thiago Monteiro 6-7 (3-7) 7-6 (7-5) 6-2.

Marcos Giron reached the second round with a 6-1 5-7 6-2 victory over Roberto Carballes Baene.

Andrey Rublev came from a set down against Holger Rune to win the Monte Carlo Masters on Sunday, his first Masters 1000 title.

Having done the same in his semi-final against Taylor Fritz, Rublev showed grit and determination to do so again in the final, eventually winning 5-7 6-2 7-5.

Rublev become only the third player in the Open Era to have comeback wins in both the semi-final and final at Monte Carlo after Ivan Lendl (1988) and Ilie Nastase (1971).

Rune started the stronger of the two and forced a break in the sixth game of the first set with two delightful drop-shot winners, only for Rublev to break straight back in the next game.

After throwing away seven of eight break point chances in the first set, it was somewhat inevitable Rublev was unable to save a crucial one on his own serve with Rune at set point, sending a return long to hand the Dane the first frame.

This was Rune's sixth ATP Tour-level final, making him the fifth teenager to pass five since 2000.

Rublev seemed determined not to make the same mistake again as he immediately broke Rune's serve in the opening game of the second set, although he did pass up two chances for a double break before Rune levelled the set at 2-2.

The heat appeared to be affecting both players' service games in a high-octane encounter, but Rublev steadied himself before breaking again and then racing to another as he comfortably secured the second set.

As Rublev had done after dropping the opener, however, Rune responded defiantly and raced out to a 3-0 lead in the decider, but after missing a chance to go 5-1 up, he was broken back as Rublev came back to 4-4.

At 5-5, a tiring Rune twice hit the net with overhead smashes and then had a double fault at break point, leading to a crucial break for the Russian, who then served out the match to clinch the title.

"I know it's tough to lose a final, but you are too freaking young, man, and already have a Masters 1000 title, so give me one time to win it," Rublev joked with a smiling Rune at the trophy presentation.

Defending champion Stefanos Tsitsipas and Daniil Medvedev were both dumped out at the quarter-final stage of the Monte Carlo Masters, with Taylor Fritz and Holger Rune advancing.

Seeded second and third respectively, Tsitsipas and Medvedev began Friday as the tournament's highest-ranked players following Novak Djokovic's shock exit, but both found themselves on the receiving end of comprehensive defeats.

World number three Tsitsipas was the victim as Fritz claimed his first victory over a top-10 ranked player on clay, ending the Greek's 12-match winning run at the competition with a 6-2 6-4 success.

Tsitsipas – who won the event in both 2021 and 2022 – was unable to contain Fritz as the American hit a series of huge winners en route to his third Masters 1000 semi-final.

Fritz will face Andrey Rublev in the final four after the fifth seed saw off the challenge of German qualifier Jan-Lennard Struff, posting a 6-1 7-6 (7-5) win.

Meanwhile, Medvedev came up short in his tussle with Rune, as the 19-year-old waltzed into his second Masters 1000 semi-final with a 6-3 6-4 triumph.

"It wasn't easy for sure, it's always tough to play Daniil," Rune said after his win. "It was actually my first time playing against him in a real match, but we've practised tonnes of times. 

"I have huge respect for everything he's done. In the last week it was not easy to stop him, but I'm happy I managed to do it."

Rune now has a 10-8 record in meetings with his fellow top-10 players, and he will have to win another such duel to make the final, with Jannik Sinner his semi-final opponent.

Sinner needed 76 minutes to beat fellow Italian Lorenzo Musetti 6-2 6-2, and the 21-year-old now has the chance to reach his third Masters 1000 final, having previously finished as runner-up at two editions of the Miami Open.

Rafael Nadal will not play at next week's Barcelona Open as he waits to return from a hip injury.

The 22-time grand slam winner has not played since going out to Mackenzie McDonald in the second round of the Australian Open in January.

Nadal did not feature at tournaments in Indian Wells or Monte Carlo, and his latest withdrawal casts further doubt on his participation at the French Open, which begins at the end of May.

He wrote on Instagram on Friday: "Barcelona is a special tournament for me, because it's my adopted club and because playing at home is always a unique feeling.

"I'm still not prepared and therefore I'm still in my preparation process for the return to competition.

"Good luck to my friend [tournament director] David Ferrer and his whole team for this edition of the Godo that will surely be a success as always on all levels."

Nadal is a 12-time winner of the Barcelona Open, which he last won in 2021.

The 36-year-old recently dropped out of the world's top 10 men's rankings for the first time since 2005 due to his injury absence, and he currently sits in 15th place.

Novak Djokovic returned to action with an "ugly" win over Ivan Gakhov in the second round of the Monte Carlo Masters on Tuesday.

The world number one was competing for the first time in five weeks after missing the Indian Wells Open and Miami Open due to being unable to enter the United States.

Djokovic, who has since been cleared to compete in the US Open later this year, faced a spirited challenge from world number 198 Ivan Gakhov but advanced 7-6 (7-5) 6-2.

Gakhov broke his somewhat rusty opponent in the seventh game, but Djokovic hit back instantly as the opening set went to a tie-break.

The Serbian appeared rattled at various points, but an unforced error from Gakhov paved the way for Djokovic to open up some day light and take the opener.

The second set went the way of serve until the fifth game, when a double fault from Gakhov gave his opponent the chance to capitalise and see out the win.

"It was probably, if you can call it this way, an ugly tennis win for me today," Djokovic said in his on-court interview. "I haven't played my best, particularly in the first set. 

"And I kind of expected that that was going to happen in a way with swirly conditions, a lot of wind today, changing directions.

"It's different practising and then playing an official match on clay, where I guess no two bounces are the same. It's always quite unpredictable what's going to happen. 

"But all in all, I'm just pleased with the way I held my nerves I think in the important moments and I managed to clinch the two-set win."

Defending champion Stefanos Tsitsipas also advanced to the last 16 with a walkover win over Benjamin Bonzi, who retired with a wrist injury when 4-1 down in the opening set.

Fifth seed Andrey Rublev had a tougher time of things against Jaume Munar as he recovered from a set down to progress 4-6 6-2 6-2

Hubert Hurkacz was the other seeded player in action on Tuesday and defeated Jack Draper 6-3 6-7 (7-3) 7-5.

Stan Wawrinka mounted an impressive comeback victory on his return to action at the Monte Carlo Masters, but Andy Murray went out in straight sets.

The pair, both three-time grand slam winners, enjoyed contrasting fortunes in their first-round matches against Tallon Griekspoor and Alex de Minaur.

Wawrinka, who has not played since Indian Wells last month, saw off the Dutchman in a 5-7 6-3 6-4 triumph, but Murray was routed by the Australian in a 6-1 6-3 loss.

"It was really important to stay calm with myself," Wawrinka said. "In the first round you need to find your game. I am happy to get through. It was important to fight until the end."

Roberto Bautista Agut saved a match point in the second-set tie-break as he fought back to overcome Filip Krajinovic to prevail 5-7 7-6 (12-10) 6-1.

Dominic Thiem is also through following a 6-1 6-4 win over Richard Gasquet but 11th seed Cameron Norrie is out after suffering a 6-3 6-4 loss to Francisco Cerundolo.

Casper Ruud clinched his 10th career ATP title with a straight-sets victory over Miomir Kecmanovic in Sunday's Estoril Open final, while Roberto Carballes Baena won the Grand Prix Hassan II.

Having enjoyed the best season of his career in 2022, Ruud was bidding for his first trophy success of 2023 in Portugal, and the world number five made a flying start to his clash with Kecmanovic.

Ruud wrapped up the opener in just 36 minutes, taking control with a huge forehand winner to break in just the third game.

The Norwegian navigated two three-set contests in order to reach the showpiece, and it looked like another of his matches may go the distance when Kecmanovic recovered to force a second-set tie-break.

However, a dipping backhand saw Ruud secure the second of two crucial mini breaks, and he took the first of his three championship points to cap a fine week with silverware, sealing a 6-2 7-6 (7-3) win.

Elsewhere, Carballes Baena won just his second career title, triumphing on the clay in Marrakesh where he beat Alexandre Muller 4-6 7-6 (7-3) 6-2.

France's Muller showed no signs of being overawed on his first final outing as he took the opener in impressive fashion, but Carballes Baena edged a tie-break in the second before dominating the decider.

Carballes Baena's triumph – recorded in just under three hours – gave him his first title since the 2018 Ecuador Open, which also came on his favoured clay surface.

Top seed Frances Tiafoe won two matches in a day to progress into the Houston Open semi-finals, while five other seeds bowed out on a busy Saturday of action.

Persistent rain this week in Houston meant the past three days of play have not been completed forcing a massive pile-up of matches on Saturday with the conditions clearing up.

Tiafoe took on Steve Johnson in the morning, winning 6-2 6-4 in the second round, before toppling Australian sixth seed Jason Kubler 6-4 6-4 in the quarter-finals.

The American, who only had a break of two and a half hours between his two matches, said: "I haven’t played two matches in one day in a long time.

"I thought it was unbelievable how I was able to come out here and play so well."

Tiafoe will take on Dutchman Gijs Brouwer in the last four after he got past fourth seed John Isner 6-4 7-6 (7-4), before taking down fifth seed J.J. Wolf 6-3 6-4.

Second seed Tommy Paul was another fancied American to bow out on Saturday, losing 7-6 (8-6) 6-2 to German qualifier Yannick Hanfmann in the second round.

Hanfmann progressed to the semi-finals where he will face Argentinian eighth seed Tomas Martin Etcheverry, with the German getting past Czech qualifier Tomas Machac 6-2 6-1.

Machac had bundled out American seventh seed Marcos Giron 6-4 6-4 in the second round.

Etcheverry progressed with victories over Australia's Max Purcell and Chile's Cristian Garin, winning the latter 6-1 6-7 (2-7) 6-3 in more than two and a half hours.

Casper Ruud defeated Quentin Halys in a third-set tie-break to reach the final of the Estoril Open, where Miomir Kecmanovic awaits after defeating Marco Cecchinato.

The number one seed, competing in his first semi-final of the season, prevailed 6-4 3-6 7-6 (7-2) in Portugal to move within one match of a 10th singles title.

Ruud broke his opponent's serve in the opening game and saw out the first set, but Halys – competing in his first ATP Tour semi-final – hit back in the second to prolong the match.

Both men held as the contest went the distance, but Ruud's quality told as he raced 3-0 ahead in the deciding tie-break and did not look back as he set up a final with Kecmanovic.

World number 40 Kecmanovic needed a little over an hour to beat sixth seed Cecchinato, who had surprised Alejandro Davidovich Fokina in the previous round.

Kecmanovic, aiming to add to his only previous singles success in Kitzbuhel three years ago, held serve throughout to claim a 6-3 6-1 win over the 2018 French Open semi-finalist.

Elsewhere on Saturday, the final seeded player fell at the Grand Prix Hassan II as Dan Evans was defeated 2-6 6-4 6-2 by Roberto Carballes Baena.

Carballes Baena has now eliminated three seeded players and will face Alexandre Muller in Sunday's final after the Frenchman saw off Pavel Kotov in straight sets.

Muller edged a first-set tie-break and proved too strong in the second as he saw out a 7-6 (7-3) 7-5 victory in Marrakesh.

Tennis great Boris Becker has emerged from a spell in prison as "a stronger, better man", having been "humbled" by his conviction for concealing assets last year.

Six-time grand slam singles champion Becker was sentenced to two and a half years in jail last April, having been found guilty of concealing £2.5million worth of assets and loans to avoid paying debts when he was declared bankrupt in 2017.

The German was released after serving eight months of his sentence in December and was subsequently deported from the United Kingdom.

Speaking to BBC Radio 5 Live, Becker said he had learned valuable lessons from his stint inside, where his legendary tennis achievements counted for nothing. 

"Whoever says that prison life isn't hard and isn't difficult I think is lying," Becker said. "I was surrounded by murderers, drug dealers, rapists, people smugglers… by dangerous criminals.

"You fight every day for survival. Quickly you have to surround yourself with the tough boys, as I would call it, because you need protection.

"If you think you're better than everybody else then you lose. It doesn't matter that I was a tennis player. The only currency we have inside is our character and our personality. That's it, you have nothing else.

"You don't have any friends at first – you're literally on your own and that's the hard part. You have to really dig inside yourself about your qualities and your strengths but also your weaknesses."

Becker – who was previously a regular on the BBC's coverage of Wimbledon – reportedly cannot return to the UK until October 2024.

Having worked as a commentator with Eurosport in Germany for the Australian Open earlier this year, Becker is eager to rebuild his reputation. 

"I'm usually good in the fifth set – I've won the first two sets, I've lost the next two and I'm planning to win that," he said.

"It certainly humbled me, it made me realise that whether you're called Boris Becker or Paul Smith, if you break the law, you get convicted and you get incarcerated, that goes for everybody.

"I never expected the good and I certainly didn't expect the bad but I'm a survivor, I'm a tough cookie. 

"I've taken the penalties, I've taken the incarceration but I've also taken the glory and if anything this made me a stronger, better man. With my decisions in the future you can see whether I have learned from it or I didn't."

Only one match was able to be completed on Friday at the Houston Open as organisers announced they would try to protect the playing surface for a busy weekend of action.

It was the third day in a row that has been washed out due to persistent rain, but after completing their first set on Wednesday, and their second set on Thursday, Max Purcell was allowed to finish off his 6-4 3-6 6-3 win over Daniel Altmaier.

It was the final first-round matchup yet to conclude, although there is still a second round, quarter-finals, semi-finals and the final to schedule in limited time before the ATP Tour rolls on.

The tournament's top seed, Frances Tiafoe, is yet to play a match yet after receiving a first-round bye, and it is the same case for second seed Tommy Paul.

In a statement, tournament director Bronwyn Greer said: "We want to ensure that our courts are in the best possible condition to complete our tournament this weekend, and with that in mind we have decided to forgo play today with the exception of that first-round match that is deep into the third set."

Casper Ruud is through to the final four of the Estoril Open after a routine 6-3 6-0 victory against defending champion Sebastian Baez on Friday.

The number one seed dominated his Argentine opponent from the moment the first set went to 3-3, winning nine-straight games from there to ease to victory.

Ruud did need to save four break points in the second game of the second set, but his ability to hold serve seemed to end any resistance that Baez could muster.

The Norwegian will face Frenchman Quentin Halys in the semi-finals after his own straight-sets triumph over Dominic Thiem

Halys reached his first ever ATP Tour semi after recording a 6-1 6-4 win over the former world number three in just one hour and 19 minutes.

The other semi-final will see Miomir Kecmanovic take on Marco Cecchinato after the latter stunned third seed Alejandro Davidovich Fokina in straight sets.

The world number 96 claimed a 7-5 7-6 (7-5) victory in the first meeting between the pair to set up a last-four clash with Kecmanovic, who saw off sixth seed Bernabe Zapata Miralles with a comfortable 7-5 6-2 win.

Elsewhere, Dan Evans is the only seed remaining in the Grand Prix Hassan II as he reached the semi-finals by cruising to a 6-3 7-5 triumph over world number 201 Andrea Vavassori in Marrakech.

Evans will face Roberto Carballes Baena next after the Spaniard toppled fourth seed Tallon Griekspoor 6-3 2-6 6-2.

Second seed Lorenzo Musetti was beaten by Alexandre Muller 6-3 1-6 6-4 in a topsy-turvy encounter, and the Frenchman will now face Pavel Kotov in the final four after the Russian defeated Christopher O'Connell in a thriller, 6-3 6-7 (6-8) 7-6 (7-3).

Thursday's action at the Houston Open has again been called off without any matches completed due to persistent rain in the area.

It is the second day in a row without a match being completed after Wednesday's play only made it through one set.

Max Purcell took the first set of his match against Daniel Altmaier on Wednesday, before Altmaier came back to win the second set on Thursday, and they will hope to complete the match on Friday when they resume with Purcell leading 6-4 3-6 4-3.

John Isner will likely have a do-or-die tie-breaker as soon as his match with Gijs Brouwer resumes, as he trails 6-4 5-6 with the Dutch competitor on serve.

The only other match underway is locked at 4-4 between Denis Kudla and J.J. Wolf.

Dominic Thiem continued to impress at the Estoril Open as he reached the quarter-finals, but second seed Hubert Hurkacz is out in Portugal.

The Austrian backed up his first round win against compatriot Sebastian Ofner with a 6-2 6-2 straight sets triumph against American Ben Shelton.

It takes the 2020 US Open winner into the last-eight where he will face Quentin Halys after the Frenchman beat fourth seed Roberto Bautista Agut in a 7-6 (7-5) 7-5 triumph.

There will be no Hurkacz however, after the Pole fell to 6-7 (7-9) 6-4 6-2 loss against the unseeded Bernabe Zapata Miralles.

Elsewhere, top seeds Lorenzo Musetti and Dan Evans are both through to the quarter-finals of the Grand Prix Hassan II.

The pair saw straight sets victories see them through the last-16, with the Italian winning 6-2 6-3 against France's Hugo Gaston and the Briton pulling out a 6-1 6-3 victory against Australia's Alexei Popyrin.

Wednesday's play was rained out at the Houston Open with only one set completed, while third seed Brandon Nakashima withdrew from the event.

Persistent rain forced an early abandonment of action on the clay courts in Houston, with all eight second-round matches pushed back to Thursday.

Max Purcell's clash with Daniel Altmaier was the only match to get underway, with the Australian leading 6-4 before rain intervened.

Top seed Frances Tiafoe was due to open his campaign against Steve Johnson, with second seed Tommy Paul to face Yannick Hanfmann.

Nakashima's withdrawal for an undisclosed reason meant lucky loser Zizou Bergs will replace him and take on Cristian Garin.