Boris Becker has highlighted one key factor behind Jannik Sinner's remarkable rise in the previous two years. The youngest Wimbledon champion praised the current winner at the All England Club and his improved serve.
Jannik has transformed his initial shot from a decent shot into a true match-winning weapon. After the painful US Open final defeat to Carlos Alcaraz in four sets, the Italian honestly opened upand gathered his team.
He and Simone Vagnozzi spent weeks adjusting his initial shot, embracing honest and urgent approach and providing much-needed implementations. They adjusted the toss, tightened the technique and provided a more reliable platform.
Thus, Jannik added another strong weapon to his arsenal, controlling the rallies from the very first shot. The hard work brought immediate results, with Sinner winning four of the final five tournaments he entered this season.
He embraced another dominant run indoors, where precision and first-strike tennis are everything. In Vienna, Paris and especially Turin, the San Candido native reached elite territory in his service games.
He got broken seven times in 15 encounters, which allowed him to make a push on the return and dominate the scoreboard. Jannik faced only 15 break points at the ATP Finals in Turin.
He fired up his initial shot and denied 14, losing serve once against Carlos Alcaraz in the final and writing history books. It was the most dominant serving run at the year-ending championship since the ATP implemented stats in 1991.
The improved serve raised his ceiling and elevated every other part of his game, providing him with confidence and clearance. With more free points, cleaner holds and constant pressure on the other side, Sinner completed the puzzle and announced his strong attack on Alcaraz's ATP throne in 2026.
Becker sees that shift as the turning point between the summer version of Jannik and the world-class, near-unbeatable player who conquered the indoor swing and gained momentum in the final chapter of the season.
With his serve worthy of his explosive baseline game, Sinner's climb to the top looks more sustainable and more threatening than ever. His first target? The Australian Open title defense in January.
"I think Simone Vagnozzi and Darren Cahill did a fantastic job after the US Open to improve Jannik's serve. That was the shot he was missing in the summer, especially in the US Open final, when Carlos outserved him.
The serve is the only shot your opponent does not play into; it's completely in your hands. Since September, Jannik has changed his technique and toss a bit. The big difference between the Jannik of the summer and the current one is his serve.
Indoors, that matters a lot," Boris Becker said.
