One-Slam Wonder is a label that can both honor an unlikely peak and suggest it will remain unique. Roland Garros 2026 will feature 10 one-time major champions in the draw — two men and eight women — and each arrives with a realistic route to chase a second Grand Slam.

On the men’s side Daniil Medvedev and Marin Cilic present contrasting cases. Medvedev’s consistency is underlined by 43 tour finals, yet clay has been a clear obstacle: he failed to win a match at Roland Garros in his first four attempts (2017-2020) and advanced as far as the quarterfinals only once, where he lost to Stefanos Tsitsipas. Last year Medvedev changed his strings during his first-round clash with Cameron Norrie, hoping to find better feel. “This one (tournament) is so different from Rome and Madrid,” he told reporters after the match. “The clay, the balls, like, everything. I had one week here (in Paris). I didn’t find anything that worked well. So during the match, I had to change something when I was losing. It actually worked. Unfortunately I didn’t win.” After mounting a furious comeback he lost a long fifth set.

Cilic offers the deeper Paris résumé. He beat Medvedev in the 2022 fourth round in straight sets and posted his best Roland Garros showing with a semifinal loss to Casper Ruud. Serious knee problems soon forced him off the tour. At 6-foot-6 his forehand is massive; his serve carried him to four Wimbledon quarterfinals and a 2016 championship match, a loss to Roger Federer. Cilic joined then-coach Goran Ivanisevic as the second Croatian man to win a major singles title.

The women’s one-time champions in Paris are Caroline Wozniacki, Madison Keys, Marketa Vondrousova, Emma Raducanu, Sofia Kenin, Bianca Andreescu, Sloane Stephens and Jelena Ostapenko. Wozniacki, the 2018 Australian Open champion, has three children, has worked as a broadcast analyst and retains a “protected ranking” (No. 71, based on her position when she stopped competing in 2024); direct entry is unlikely. Keys finally won a major in 2025 after a career that began with an Australian Open semifinal at 19 and includes 11 quarterfinals or better, five semifinals and a 2015 US Open final. Vondrousova won her first main tour title at Biel-Bienne at 17 and, as Mats Wilander has said, she has “the best hands in the women’s game.” Injuries, surgeries and other interruptions leave several participations uncertain, but Paris gives every one-time champion a clear chance to enlarge a solitary major into a broader legacy.

Two teenagers whose careers have tracked close together have suddenly tilted the ATP conversation. Joao Fonseca, once the unquestioned beneficiary of rising hype, is confronting a new dynamic as Rafael Jodar, 19, charges into the spotlight.

Jodar vaulted from a Jan. 1 ranking of No. 165 to his current No. 29, won his first ATP Tour title and beat Fonseca in the third round at Madrid. That win left Jodar one spot above Fonseca on the rankings computer, a small but telling indicator of momentum.

Fonseca has struggled with a lingering back injury and a sophomore wobble this season yet remains focused on improvement. “I’m young and doing great, but to reach my dream, I need to focus on my routine, my day by day,” Fonseca told the ATP’s media team a year ago in May. He has tried to temper expectations as well: “I would be happy if, well, if I make good results, if I play good matches. Even if I lose. . . My mentality now, [is] that I need to [see] every match as an opportunity to learn.”

The two players share striking parallels. Both were born a month apart in 2006, each won one junior Grand Slam at the US Open (Fonseca in 2023, Jodar in 2024) and both received recruitment to the University of Virginia. Fonseca skipped freshman orientation and turned pro; Jodar played one season at UVA, posting a 19-3 singles record and helping the Cavaliers to the NCAA quarterfinals.

Fonseca’s form has been uneven in 2026. He lost in the first round of the Australian Open to Eliot Spizzirri, won only one match across the Buenos Aires and Rio spring events, then recovered some rhythm with three wins at Indian Wells. His clay season has been solid if unspectacular. After the Madrid match he smashed a racquet for the first time in ATP play, apologized on social media and described the reaction as the “Jodar effect,” or, as he put it more simply, “pressure.”

Respect between them is genuine. “He possesses all the qualities to become an extraordinary player,” Fonseca said after their meeting, and Jodar returned the sentiment: “He’s a very young player, a great player. So, yeah, I wish him the best of luck for the rest of the season and for his career.” Fonseca remains steady in outlook: “Everyone has their time,” Fonseca said in Monte-Carlo. “My time will come. I’m doing great… (Let’s) keep with this routine, keep with this mentality to work quietly and hard. But yeah, I think the expectations are going to come.”

Paris will host a familiar mix of challengers in 2026, many of them still chasing a first title at Roland Garros. For a handful, this fortnight will feel less like a fresh quest and more like an opportunity to close chapters that have opened and then slipped away.

Jannik Sinner perhaps tops the list. In last year’s final he led Carlos Alcaraz two sets to love and had a break in the third set. After losing that set he held triple match point in the fourth with Alcaraz serving at 3-5, 0-40, and he served for the match in the next game as well before falling in five. He also led Alcaraz two sets to one in the semifinals the year before, also losing in five. Having been unbeaten since February and with Alcaraz unable to defend his title this year due to a right wrist injury, Sinner arrives with clear momentum.

Aryna Sabalenka was another who came painfully close last year. She snapped Iga Swiatek’s 26-match Roland Garros winning streak in the semis before losing a final thriller to Coco Gauff, 6-4 in the third, in which she committed 70 unforced errors. A four-time Grand Slam champion on hard courts, Sabalenka nearly added a title on a natural surface in Paris.

Alexander Zverev has been constantly within striking distance at the French Open. Two years ago he reached the final and led Alcaraz two sets to one before the Spaniard recovered to win in five. Zverev has also reached three other semifinals and three quarterfinals in Paris. As this year’s No. 2 seed he has a strong chance to reach another final, though he would face the challenge of snapping a nine-match losing streak against Sinner if they met there.

Casper Ruud has been to three Grand Slam finals without securing a major, and two of those finals came at Roland Garros. He lost in straight sets to Rafael Nadal in 2022 and to Novak Djokovic in 2023, the latter finishing 7-6 (1), 6-3, 7-5. A Madrid champion last year and a Monte Carlo and Rome finalist during his career, Ruud remains a persistent threat on clay.

Stefanos Tsitsipas still seeks a first major as well. He built a two-sets-to-one lead against Novak Djokovic in the 2021 Roland Garros final but ultimately lost 6-4 in the fifth. Once ranked No. 3, he has slipped to No. 82 after early exits at recent majors, yet Paris has been one of his more consistent venues.

Among the women, Karolina Muchova also carries unfinished business. She returned to the Top 10 this week at No. 10 and in 2023 stunned Sabalenka from match point down in the semifinals before taking a lead against Swiatek in the final only to lose the last three games and her best shot at a first Grand Slam title.