Mats Wilander might not have been as flashy as some of tennis’s greatest icons, but his sheer determination to be the best set him apart. Despite achieving historic feats at a young age, the Swedish star struggled to maintain his dominance at the top.

Tennis has seen the rise of many greats, from its early days to modern stars like Carlos Alcaraz and Jannik Sinner. But few rivalries compare to the legendary “Big Three” era of Rafael Nadal, Novak Djokovic, and Roger Federer—a trio that defined an era of excellence. Nadal was asked to name the toughest rival of his career between the Swiss maestro and the Serbian superstar.

With 22 Grand Slam titles and 209 weeks as the world’s No. 1, Nadal’s career has been shaped by the intense rivalries that pushed him to his limits. Early on, his battles with Federer took center stage, but as time passed, Djokovic emerged as another formidable opponent.

Nadal and Djokovic have faced off an astonishing 60 times, with Djokovic holding a slight edge at 31 wins to Nadal’s 29. Meanwhile, Nadal and Federer met in 40 matches, with Nadal leading their head-to-head 24-16.

In an interview with AS, Nadal opened up about how he views his rivalries with Federer and Djokovic. “Djokovic is the player I’ve faced the most, but for me, my greatest rival has been Federer,” Nadal admitted. “When I arrived on the circuit, it was Federer who was there first. During the years when I was at my best in every sense, it was Roger and Novak. But in the early years, which shape you in a special way, Roger was always there.