Rick Macci has never been shy about bold proclamations, and his latest target is Jannik Sinner. The celebrated American coach, best known for guiding Serena and Venus Williams through their formative years, has gone on record predicting the Italian star could finish his career with more than 20 Grand Slam titles, provided he stays healthy.
Macci shared his thoughts on X, comparing Sinner's relentless upward trajectory to his early days as a skiing prodigy racing downhill in the Alps. He called him the "Red Rocket" and expressed full confidence that the Italian has the tools to sit alongside the Big Three in the all-time record books.
Sinner currently holds five major titles: two Australian Opens, one US Open, and back-to-back Wimbledon crowns, the latter secured in July. That haul places him joint 13th in the Open Era Grand Slam standings, with Carlos Alcaraz ahead among active players on seven. Novak Djokovic leads all-time with 24, followed by Rafael Nadal on 22 and Roger Federer on 20.
Macci also weighed in on Sinner's decision to skip the Canadian Open after Wimbledon, defending the choice emphatically. He argued that elite athletes understand their own bodies better than outside critics ever could, and that prioritizing rest before the US Open at Flushing Meadows is exactly the kind of smart, long-term thinking that separates champions from pretenders. Sinner planned to return at the Cincinnati Open before heading to New York.
With his combination of youth, consistency, and championship pedigree already established at just five majors deep, the conversation around Sinner's legacy ceiling is only heating up. TennisDraw users will want to lock in their US Open bracket picks early with this kind of momentum behind him.
