America's J.J. Wolf was the top seed in action on Tuesday at the Houston Open and he had no issue in his 6-3 6-2 first-round victory over Jordan Thompson.

Wolf, the fifth seed at the United States' only clay court event on the ATP Tour calendar, needed just 75 minutes to send the Australian home early on the back of a rock-solid serving performance.

Thompson was not able to produce a single break point opportunity in the match, and Wolf left an exclamation point on the contest by winning the final five games to run away with the win.

Meanwhile, seventh seed Marcos Giron gave the American crowd another win to cheer for in his 6-0 6-2 demolition of Ecuador's Emilio Gomez.

The chance for the double-bagel was there for Giron after winning the first 11 games to race out to a 6-0 5-0 lead, but he blew four match points as Gomez showed no quit and secured a break to at least take the match over the 60-minute mark.

Eighth seed Tomas Martin Etcheverry prevailed 6-3 6-4 in his all-Argentine clash against Juan Manuel Cerundolo, taking a 3-2 lead in their overall head-to-head meetings after rising 21-year-old Cerundolo took the past two.

German qualifier Yannick Hanfmann booked a second-round matchup against second seed Tommy Paul after a hard-fought 6-4 3-6 6-2 triumph over Japan's Yosuke Watanuki, while Chile's Cristian Garin had little resistance in his 6-3 6-0 victory in a South American showdown against Bolivia's Hugo Dellien.

In the late window, Jack Sock failed to complete the United States clean sweep for the day as he fell 6-2 6-4 to the Czech Republic's Tomas Machac.

Playing in his hometown of Buenos Aires, Francisco Cerundolo avenged his younger brother's defeat at the Argentina Open by defeating Yannick Hanfmann 6-2 4-6 7-5 on Tuesday.

Francisco's younger brother Juan Martin had been eliminated by Hanfmann in the qualifying stage, but the fifth seed got one back on the German after leading the break point opportunities 17 to six.

Fifth-seed Cerundolo was the highest seed in action Tuesday, while sixth seed Sebastian Baez fell 3-6 7-6 (7-5) 6-3 to Serbia's Dusan Lajovic.

In the only all-Argentine clash it was Facundo Diaz Acosta prevailing 7-6 (7-5) 7-5 against Federico Coria – who sits over 100 places higher in the rankings – while Roberto Carballes Baena collected a seeded scalp with a 7-5 6-4 win over Spanish compatriot Albert Ramos-Vinolas.

Meanwhile, Australian Open quarter-finalist Ben Shelton was eliminated from his own hometown tournament as the Florida resident was bounced out of the Delray Beach Open 6-4 6-4 by Marcos Giron.

Shelton beat J.J. Wolf to reach that grand slam quarter-final, but Wolf will be moving on after he emerged with a 7-5 6-3 win against Ilya Ivashka. 

Wolf will play France's Adrian Mannarino following his 4-6 6-3 6-4 triumph over Germany's Daniel Altmaier, and Mackenzie McDonald will get a shot at redemption against fifth seed Yoshihito Nishioka after a comfortable 6-2 6-2 success against Taro Daniel.

McDonald and Nishioka have played twice this year – once at the Adelaide Invitational and once at the Australian Open – and Nishioka has won all five sets.

It was also a day 33-year-old Matija Pecotic will never forget, with the world number 784 winning his first ever ATP Tour match by defeating Jack Sock 4-6 6-2 6-2.

Roberto Bautista Agut made light work of underdog Filip Misolic in the Austrian Open final on Saturday.

Bautista Agut entered the day's play not knowing the identity of his opponent, as Misolic's semi-final against Yannick Hanfmann had been halted in a third-set tie-break.

Misolic – a 20-year-old from Graz ranked 205th in the world – was the man to advance, continuing his dream run with a 6-2 2-6 7-6 (7-4) success.

But his fairytale campaign came to a disappointing conclusion soon after as he was quickly thrust into action against the ruthless Bautista Agut.

Misolic scarcely laid a glove on the third seed, unable to convert any of his three break points in a 6-2 6-2 defeat.

Bautista Agut insisted afterwards this had been no straightforward task as he celebrated his 11th ATP Tour title, but only his second on clay, following on from a 2014 victory in Stuttgart.

"I enjoyed the final," he said. "I think I managed the pressure very well.

"I knew I was a little bit the favourite today, but he had so many good wins this tournament and I knew it was going to be difficult. I played a very good match."

Misolic added: "I want to congratulate Roberto. I have watched you on television, and to play here against you in the final is an honour for me."

Carlos Alcaraz was made to come from a set down but finally overcame Nicola Kuhn in the first round of the Hamburg European Open.

The highly rated Spanish teenager eventually downed the German wildcard 3-6 6-1 7-6 (7-3).

Kuhn, ranked 259 in the world, was aggressive early on against Alcaraz, and was rewarded with the first set.

But the 19-year-old – playing as top seed in an ATP Tour event for the first time – rallied to ease through the second set, before being made to work much harder to clinch the win on a tie-break.

Alcaraz will now play Filip Krajinovic in the second round after the Serbian also won in a third-set tie-break against Sebastian Baez 6-1 4-6 7-6 (8-6).

Three seeded players crashed out on Tuesday in straight sets, with third favourite Diego Schwartzman losing against Emil Ruusuvuori 7-5 6-4, sixth seed Nikoloz Basilashvili beaten by Aslan Karatsev 6-4 6-0, and eighth seed Holger Rune going down 7-6 (10-8) 7-5 to Tallon Griekspoor. 

Fourth seed Pablo Carreno Busta eased through against Luca Nardi 6-2 6-1, while there were also wins for Fabio Fognini, who sealed his 400th career victory, as well as Daniel Elahi Galan, Borna Coric and Francisco Cerundolo.

At the Swiss Open in Gstaad, sixth seed Cristian Garin lost 6-3 6-4 to Yannick Hanfmann and seventh favourite Hugo Gaston fell to Dominic Thiem despite winning the first set, losing 1-6 6-1 7-6 (9-7).

Elsewhere, Frenchman Richard Gasquet beat Roberto Carballes Baena 7-5 6-4, while his compatriot Benoit Paire retired hurt when a set and a break down against Elias Ymer.

A tight game between Swiss pair Dominic Stricker and Marc-Andrea Huesler saw the former prevail 6-7 (2-7) 7-6 (7-2) 6-4, and an all-Spanish affair was similarly close as Jaume Munar defeated Bernabe Zapata Miralles 6-3 3-6 7-5.

There were also wins for qualifiers Juan Pablo Varillas and Nicolas Jarry against Lorenzo Sonego and Thiago Monteiro respectively.

Rafael Nadal insisted he does not feel any significant pressure at the Australian Open as he goes in search of a record-breaking 21st grand slam singles title.

The Spaniard eased into the third round on Wednesday with a 6-2 6-3 6-4 over Yannick Hanfmann on Rod Laver Arena.

Nadal, who is now 16-0 in the second round of this event in his career, has enjoyed an encouraging return to action in 2022 following a foot injury.

The 35-year-old won the Melbourne Summer Set warm-up tournament, collecting his 89th title on the ATP Tour in the process, and is now 5-0 for the season.

With Novak Djokovic not involved, the prospect of Nadal winning a second Australian Open title – and a record 21st major overall – is very real.

None of Nadal's vanquished opponents this month are in the top 50 in the world, though, and he could face 28th seed Karen Khachanov in round three before a possible quarter-final against world number three Alexander Zverev.

Still, rather than worry about the matches to come, Nadal is simply enjoying being back on court and retuning his game.

"As I said here before the tournament started, things [are] not going to be perfect, but every day that I'm going to spend on court, the chances to play better are higher," he said.

"I think I am doing things well. Things that I can improve, I have to improve. I want to keep going in the tournament. But winning today allows me to practice again tomorrow, to be ready for another match. After two matches it's the moment to make a step forward. It's not going to be impossible. I'm going to try.

"I'm excited about it. I'm excited about the fact that I'm going to be playing in a third round for one more time here after all the things I am going through.

"I don't have big pressure on my shoulders, honestly. I don't feel it. The pressure is only to stay healthy and to enjoy the fact that I am competing again, then give my best as I did during all my tennis career."

Asked about the potential Zverev match-up, Nadal added: "I don't know. I am in the third round. I need to win very tough matches to be there. It is not in my mind now. I have enough work.

"I think playing against Khachanov now, probably Khachanov, [is] going to be a big challenge.

"I never think that far. You can imagine now less than ever, no? Just staying focused on my daily work, on what's coming, and that's it. One moment in time, that's it."

Rafael Nadal remains on track for a record-breaking 21st grand slam title after getting past Yannick Hanfmann at the Australian Open.

Nadal, bidding to become the outright record holder for the most majors won by a man, was too good for Hanfmann in a 6-2 6-3 6-4 victory in the second round on Wednesday.

The Spanish star had won his only previous meeting with the German – at the French Open in 2019 – and proved too strong on Rod Laver Arena.

Nadal will face either Russian 28th seed Karen Khachanov or Frenchman Benjamin Bonzi in the third round.

Hanfmann held his own early, but Nadal landed the first break in the sixth game, a backhand winner down the line followed by a volley to give him a 4-2 lead.

A break point went begging for Hanfmann in the next game and Nadal punished him, a tremendous backhand winner down the line clinching the set.

Just as the sixth game looked set to be Hanfmann's undoing again, the German saved a break point and held for 3-3.

But a pair of forehand winners would give Nadal a 5-3 lead on his way to taking the second set.

The contest looked over as Nadal broke for 2-1 in the third set when Hanfmann sent a forehand long to end a 22-shot rally.

And that proved to be the case, Nadal digging out of a 0-30 hole in the eighth game – and jumping in celebration – before closing out his win with another tough hold.

DATA SLAM: Nadal's second-round perfection in Melbourne intact

Nadal has never lost in the Australian Open second round.

He improved that record to 16-0 with the win over Hanfmann. Only once in his career has the 2009 champion bowed out before the third round in Melbourne – losing to Fernando Verdasco in his opener in 2016.

WINNERS/UNFORCED ERRORS
Nadal – 30/26
Hanfmann – 30/32

ACES/DOUBLE FAULTS
Nadal – 1/5
Hanfmann – 5/1

BREAK POINTS WON
Nadal – 4/16
Hanfmann – 0/2