ROME — Top-ranked Jannik Sinner passed a big test on his return from a three-month doping ban, beating accomplished clay-court player Francisco Cerundolo 7-6(2),6-3 on Tuesday to reach the quarterfinals at the Rome Open.

The 18th-ranked Cerundolo has a tour-best 18 wins on clay this year, and was coming off a run to the Madrid Open semifinals.

The Argentine also beat Sinner when they last met on the same court — and in the same round — two years ago.

It's Sinner's first tournament since he won his third Grand Slam title at the Australian Open in January, and he hasn't dropped a set in three matches.

"Today I felt that I raised my level," Sinner said. "It was a very long day, but I need this. I'm happy to be back. I was out for three months, so every situation, for me, I feel very fortunate to be here; very lucky."

Sinner extended his winning streak to 24 matches, dating back to October, and he said that reaching the quarterfinals was "a great result", adding that "for the first tournament, I'm very, very happy".

In February, Sinner agreed to a settlement with the World Anti-Doping Agency that raised some questions, since the three-month suspension conveniently allowed him not to miss any Grand Slams and return at his home tournament.

Rome is the last big warmup before the French Open starts on May 25.

The start of the match was delayed for several hours due to rain, turning it into a night match. But, ticket-holders for the day session at the Foro Italico hung around to see their home player and serenaded him with chants of "Ole, Ole, Ole; Sin-ner, Sin-ner" in all of the big moments.

One sign in the crowd read: "We are all Sinners."

Sinner hung on during long rallies with Cerundolo, and eventually found the range on his drop shot when it mattered most — during the tiebreaker.

When Sinner produced a stop-volley winner early in the second set, he gestured with his fingers for the crowd to cheer louder.

Sinner then required a medical timeout for treatment of apparent blisters on his right foot, but he broke Cerundolo in the next game to take a 3-1 lead in the second set to take control for good.

Sinner will next face either freshly crowned Madrid champion Casper Ruud or Jaume Munar.

Sinner is attempting to become the first Italian man to win the Rome title since Adriano Panatta in 1976.

Overcoming fatigue

In the other half of the draw, Carlos Alcaraz was made to work for a 6-3, 3-6, 7-5 victory over Karen Khachanov that earned him a rematch with Jack Draper, who beat the Spaniard earlier this year.

Alcaraz improved to 5-0 in his career against the 24th-ranked Khachanov with the win on Tuesday.

"Physically, I was struggling a little bit," Alcaraz said.

"Not any pain in any part of the body. I was just tired. I had to run a lot. I was really proud the way I fought (for) every ball."

The third-ranked Alcaraz wore a long black brace that covered the upper portion of his right leg and stretched down to just below his knee.

Alcaraz withdrew from Madrid due to an upper right leg ailment that started bothering him during the Barcelona Open final. He also had a left leg injury.

Alcaraz, who won the Monte Carlo Masters in April, improved to 12-1 on clay this season. The four-time Grand Slam champion will next face No 5-ranked Draper, who rallied past Corentin Moutet 1-6, 6-4, 6-3.

While Alcaraz holds a 3-2 career edge over Draper, the Briton won their most recent meeting in the semifinals at Indian Wells, California, in March, en route to winning his maiden ATP 1000 title.

The other home hope in the men's draw, Lorenzo Musetti, had set up a match point against Daniil Medvedev when their match was interrupted by rain.

The contest was suspended for nearly three hours before the players finally came back out, and Musetti closed it out by producing an inside-out forehand winner on the first point of the resumption.

Musetti, a new entrant in the top 10 at No 9, won 7-5, 6-4.

Paolini into semis

In the women's tournament, Jasmine Paolini rallied past Diana Shnaider 6-7(1), 6-4, 6-2 to become the first Italian woman to reach the semifinals in Rome since her doubles partner, Sara Errani, lost the 2014 final to Serena Williams.

Paolini was trailing 3-0 in the second set when the match was briefly stopped due to rain.

Shnaider went on to hold serve and go ahead 4-0 after the suspension of play, but then Paolini won six straight games to take the set.

"It was a good thing that it rained for five minutes. I got some coaching from Sara," Paolini said of Errani, who was watching from the stands.

The last Italian woman to win the Italian Open was Raffaella Reggi, who took the 1985 title in Taranto.

Agencies via Xinhua