Sinner Vows to Persuade ‘Second Father’ Cahill to Stay in His Corner
World No. 2 Reflects on the Upcoming Season Ahead of the ATP 500 in Vienna
October 20, 2025
Photo Credit: Hu Chengwei/Getty Images
Jannik Sinner had to retire from his latest tour-level match in the third round at Shanghai.
By ATP Staff
As Jannik Sinner gears up for his campaign at the Erste Bank Open in Vienna, he acknowledges that one of his toughest challenges this season may not involve swinging a racquet, but rather engaging in heartfelt dialogue.
The 24-year-old is determined to do whatever it takes to keep his coach, Darren Cahill—who he refers to as a “second father” in his corner for the next season.
“We haven’t discussed it yet, to be honest. We agreed to focus on finishing this year before having a more in-depth conversation,” Sinner shared with ATP Media, flashing a smile. “Regardless of his decision, I deeply appreciate everything he has done, especially in keeping our team united during tough times.
“Having him here is a privilege. Our aim is to achieve a positive outcome, and I hold on to hope for that,” Sinner added.
Having confirmed earlier this year that 2025 would mark the conclusion of his partnership with the Australian coach—who has been by his side since 2022—Sinner reflects on a remarkable season illuminated by titles at both the Australian Open and Wimbledon. With a 43-6 win-loss record in tour-level matches so far, he appreciates Cahill’s contribution to his achievements.
“The results speak volumes. I’m committed to doing everything possible for my well-being because he’s been crucial in this success. I see the dedication he puts in while working with a 24-year-old traveling the globe, always prioritizing my needs despite his own commitments,” Sinner remarked.
Sinner is eager to quickly rebound from his recent early exit at Shanghai, where he was forced to retire in the third round. He will commence his journey at the ATP 500 in Vienna this Wednesday, facing off against Germany’s Daniel Altmaier, whom he has a head-to-head advantage over at 2-1.
In his last Vienna appearance in 2023, Sinner dazzled fans by claiming the title after an intense three-hour battle against Daniil Medvedev in the final.
“Reflecting on my year, it’s been exceptional—securing two Grand Slam victories and reaching the finals in the two largest tournaments, including a recent win in Beijing,” Sinner stated about his season. “The past weeks have offered a significant confidence boost, and I’m pleased that my mental game is in a solid place. I’m feeling great at the moment.”
With a spot secured at the Nitto ATP Finals, Sinner is determined to narrow the gap in his quest to reclaim the ATP Year-End No. 1 title presented by PIF honors, currently trailing rival Carlos Alcaraz by 2,640 points in the PIF ATP Live Race To Turin.
