Bold claim: the era of the ‘Big Three’ may be over, but the future order of men’s tennis is far from settled. As Roger Federer, Rafael Nadal, and Novak Djokovic each aged out of peak dominance, fans wondered who could step into the vacuum and challenge the new kings. Carlos Alcaraz and Jannik Sinner have shattered any expectation that majors would be handed out to others, sweeping the last eight Grand Slams and steering the ATP Tour with authority. The burning question for 2026: who can truly derail the Sincaraz duo?
Patrick Mouratoglou, who guided Serena Williams to 23 major titles, cautions that it’s hard to identify a real threat right now. “There are plenty of players who could become dangerous if they continue to improve,” he told BBC Sport, but the margin separating Alcaraz and Sinner from the rest makes predicting a challenger for next season exceptionally difficult.
BBC Sport highlights five players who could become credible contenders to end the Sincaraz era next year.
Ben Shelton — power serve, confident persona
Age: 23 - World ranking: 9
Career Slam highlights: 2023 US Open semi-finalist, 2025 Australian Open semi-finalist
Shelton burst onto the scene with electric serves approaching 150 mph and a bold on-court swagger. He reached the US Open semi-finals in 2023 and added another Slam semi in Melbourne in 2025, though he fell to Sinner each time this year. At Roland Garros and Wimbledon, Alcaraz and Sinner blocked his path.
Mouratoglou suggests the next top contender will need a sizable ego to break through—someone like Shelton. He emphasizes Shelton’s potential, provided he continues to grow with confidence.
Former British No. 1 Greg Rusedski also sees Shelton’s “firepower” as a genuine weapon, adding that improvements to his backhand, court positioning, and big-point play will be essential to convert potential into major success.
Taylor Fritz — aggressive baseline power, hungry to rise
Age: 28 - World ranking: 6
Career Slam highlights: 2024 US Open finalist
Fritz has been a fixture inside the top 20 for several seasons, built around a serve that ranked among the tour’s best in 2025. His game hinges on aggressive baseline play, a robust first strike, and relentless effort. Yet his results against Alcaraz and Sinner have lagged, with only two wins in 11 meetings against them (one each) and no major-stage victories yet.
Tim Henman identifies Fritz as the most likely to close the gap, praising his efficient serving and groundstrokes, while noting the need to finish more points at the net when he’s aggressive from the baseline. He also approves Fritz’s newer drop-shot variation to move opponents around, a tactic that could help him contend in big matches when the stakes rise.
Jack Draper — left-handed weaponry with high upside
Age: 23 - World ranking: 10
Career highlights: 2024 US Open semi-finalist
Draper finished 2025 as the world No. 10 despite playing only 11 tournaments, underscoring his extraordinary potential. His left-handed serve and punishing forehand can destabilize most opponents, and he has even defeated Sinner and Alcaraz in best-of-three formats, including a victory over Alcaraz on the path to Indian Wells glory in March.
Davis Cup captain Leon Smith notes Draper’s raw weapons and the strategic advantage of being a left-hander. However, Smith also highlights the uphill battle: to win Slam titles, Draper would likely need to beat one of Sinner or Alcaraz in the semi-finals and the other in the final—a monumental challenge that demands consistency across the big stages.
Felix Auger-Aliassime — maturing with immense firepower
Age: 25 - World ranking: 5
Career Slam highlights: 2021 and 2025 US Open semi-finals
Auger-Aliassime’s rise looked destined for the absolute top when he first reached a Grand Slam semi in 2021. A streak of injuries and self-doubt tempered that early promise, but 2025 brought improvement. After dipping outside the top 20 at the start of the year, he surged back into the top five following a deep US Open run, Brussels triumph, and a Paris Masters final appearance, where he fell to Sinner.
Tennis Channel analyst Mark Petchey praises his growth, noting that he has the tools—huge serve, deep groundstrokes, top-tier athleticism—to trouble the top two if he continues to sharpen his game and maintain belief in his ability.
Novak Djokovic — the timeless challenger
Age: 38 - World ranking: 4
Career Slam highlights: 24 major titles
Djokovic’s sustained brilliance remains the greatest obstacle to an immediate Sincaraz monopoly. Even as he plays less frequently, he remains a top-tier force and is widely regarded as the most capable outsider to disrupt the new duo. If there’s a path to a 25th major, it could lie in capturing standalone records against the up-and-coming generation.
Rusedski emphasizes Djokovic’s relentless drive and the sense that he’s still searching for a way to beat Sinner and Alcaraz over five sets. Djokovic’s displays at the Australian Open and Melbourne Park, where he’s historically dominant, hint at concrete chances if he can translate those moments into a full slam run.
Other contenders and the next generation
Beyond the five players above, names like Germany’s Alexander Zverev and younger talents such as Joao Fonseca (Brazil, 18) and Jakub Mensik (Czech Republic, 20) show promise. Zverev remains a formidable threat but has repeatedly fallen short in major finals. The newer wave—while exciting—still faces questions about consistency and the mental edge required to win Slams.
Bottom line
As the 2026 season approaches, it’s clear that several players possess the tools to pose real challenges to Alcaraz and Sinner. Yet turning potential into consistent major success is a different hurdle altogether. The big question remains: which of these players will step up when it matters most, and will any be bold enough to crown themselves the next era-defining champion? Share your views: who should we be watching, and why? Do you agree with the top contenders listed here, or is there another slam hopeful you believe could disrupt the Sincaraz era?
