The ATP Challenger circuit remains the proving ground for players who later dominate the main tour. Recent interviews with leading names underline how first Challenger titles provided a foundation of confidence and match experience long before Grand Slam or Masters glory.

Over the past few months, we caught up with some of the most celebrated Champions in men’s tennis and spoke to them about their very first triumphs on the Challenger circuit. For many, that initial title was a defining professional milestone.

Carlos Alcaraz reflected on the pathway explicitly. “It is a step you’ve got to make if you want to get through to the ATP Tour,” Alcaraz tells us. His first Challenger title came in Trieste, Italy in August 2020, a win that preceded his rise to the highest levels of the sport.

Alexander Bublik stressed the extra pressure younger players face. “Pressure will be more than usual on the Challenger Tour, and that’s where a lot of young players break,” says Bublik. His own first Challenger crown was in Morelos, Mexico in February 2017.

Jannik Sinner recalled the immediate lessons of competing above his usual level. “I arrived the night before and I played against a Top 500 player. And I [had] never won against a Top 500 player,” says the now-world No. 1. Sinner took his first Challenger title in Bergamo, Italy in February 2019.

Other recent winners described local significance and survival skills. “We don’t have any ATP Tour events in the Czech republic, so it was the highest tournament category I could win in my home country,” explains Mensik after his Prague triumph in May 2023. “These matches taught me how to survive,” says Tsitsipas, recalling his Genova title from September 2017.

This series highlights how Challenger victories act as both confidence builders and classroom matches. Grigor Dimitrov and Stan Wawrinka are wild-card entrants in this week’s loaded Challenger 175 in Aix-en-Provence, France. Expect further profiles that trace the early titles behind today’s top performers and attention on this week’s Challenger events in Aix-en-Provence and Cagliari.

Ethan Quinn has spent the start of 2026 learning to manage a new rhythm after breaking into the Top 100 last year. The 22-year-old added the biggest title of his career at the Phoenix Challenger, a week he sought after a narrow defeat to Reilly Opelka at the BNP Paribas Open.

Before Phoenix, Quinn’s season had been stop-start. Aside from a third-round run at the Australian Open in which he defeated Tallon Griekspoor and Hubert Hurkacz in straight sets, some early weeks produced two or fewer matches, including qualifying. He broke into the Top 100 last June following Roland Garros, where he competed six times after coming through qualifying.

“Something that a lot of players don’t speak about is when you’re playing Challengers and doing well, you’re constantly playing three, four, five matches a week. That’s the idea of a good week. Even when you’re playing ATP qualies, a good week is qualifying in and winning your first round,” Quinn said.

“Once you get to the Top 100, you’re in main draws directly and sometimes consistently winning a first round and getting enough points is perceived to be a good week. That’s a tough flip to make in your head.”

The disparity shows in match totals. Quinn’s loss to Opelka was his 11th match of the year including qualifying; a year earlier he had played 25 matches after leaving the California swing.

“It’s a really difficult thing to get in your brain. Thirty points to win a first round, versus in Challengers five or six points to win one. The terms are just different,” he says.

“At Indian Wells, I could have played a great or terrible match against Reilly, but you don’t actually get to see where you’re at. When I lost that match, I was like, I really want to come to Phoenix and get a chance to see where my level is. I was looking forward to coming here when we saw it on the schedule.”

Phoenix also allowed Quinn’s sports psychologist, Derin McMains, to watch him in person. They consult once or twice a month, typically 45 to 60 minutes on FaceTime. “Sometimes it’s about other mental cues that can help get me in the right frame of mind, right way to compete. There’s tournaments like Indian Wells where there’s a lot more obligations outside of the tennis court. Being able to handle all of that adversary is something that I really appreciate from him,” says Quinn.

“He works with the Arizona Diamondbacks and a plethora of professional athletes. Hearing his expertise when it comes to not just tennis, but problems that other athletes have, is really nice to discuss with him.”

Quinn’s run in Phoenix included a comeback after losing the opening set to Alexander Shevchenko, nine straight sets won, a quarterfinal where he saved six set points against Benjamin Bonzi, and a close win over Marcos Giron in the decider. “A lot of players that are in my shoes are here to play matches as well. It’s not an easier tournament. You’re still playing guys who were in Indian Wells last week,” he says. “I want to make sure that I’m respecting my opponents, whether it’s Carlos [Alcaraz] or a guy ranked 600, you have to treat him with the same understanding that he can beat you.”

Our conversation ended with coffee talk. Quinn loves his vanilla lattes, and his level on court this season has been anything but vanilla.

Mariano Navone captured his first hard-court title, defeating Mattia Bellucci 7-5, 6-4 in two hours and five minutes to win the República Dominicana Open – Copa Cap Cana. The 25-year-old, seeded sixth, arrived in the final after a demanding semifinal win over Alexander Blockx while Bellucci reached the title match without dropping a set.

Navone set the tone with steady baseline play, prevailing in longer rallies and pressuring the Italian’s serve. Bellucci conceded a pivotal break in the opening set, and Navone claimed two early breaks in the second to close out the match. Competing in sunny, hot conditions above 30 degrees Celsius, Navone endured a heat break during the second set but remained composed. The world No. 79 withstood four aces, broke Bellucci three times and won 53 percent of the total points.

“I had been looking for a result like this on hard courts for a long, long time,” Navone said. “We learned to play on hard courts later in our careers. Argentine players grow up on clay, but here in Cap Cana I find conditions that suit me well because the ball bounces higher.”

The victory is a milestone for Navone, who previously won eight Challenger titles on clay. He arrived in the Dominican Republic after a first-round loss to Marcos Giron in Indian Wells and produced wins over local wild card Nick Hardt, Shintaro Mochizuki, second-seeded Valentin Royer and Blockx en route to the crown. Navone has begun a new partnership with coach Alberto Mancini. “It was an amazing week here in Cap Cana. It is an amazing tournament,” Navone said. “Very happy to be champion and also hope all the best in the future for Miami. But now, we have to enjoy this week.” He earned $48,000 and 175 ATP points, jumping 18 places to world No. 61.

At the concurrent Challenger 175 in Phoenix, 22-year-old Ethan Quinn defeated Marcos Giron 7-6 (1), 4-6, 7-5 in two hours and four minutes to win the Arizona Tennis Classic. “It’s surreal,” Quinn said after lifting his second ATP Challenger career trophy, and first since Champaign, Illinois in November 2024. “It’s not every day that you get to be in the final. I feel like it’s been a while since I’ve been in a final, getting to compete late in a tournament, so all the emotions are really high.” “Getting a title and getting that confidence going into Miami, going into the clay season is going to be really nice,” the Californian said. Quinn celebrated his 22nd birthday during the week and rose to a career-high world No. 56. Earlier in Phoenix, Billy Harris and Adrian Mannarino played a record 3-hour, 20-minute quarterfinal match for the tournament.