ATP Tour
Jannik Sinner will end his partnership with coach Darren Cahill after the 2026 season, he announced on Friday 6 November. Magnus Norman, the Swede who coached Stan Wawrinka to all three of his Grand Slam titles, joins the team on 1 December and will work alongside Simone Vagnozzi, who stays.
Why Cahill Is Leaving
The split has been coming for a while. Cahill, 61, had planned to stop coaching at the end of 2025. Sinner later revealed that the two had made a bet: if Sinner won Wimbledon, he would get to decide whether Cahill stayed. He won the title in July 2025, and Cahill agreed to one more season, although Italian reports said he would not travel to every tournament. In a video released with the announcement, Sinner joked that Cahill had told him he would stop after 2025 and that he could not get rid of him.
In his statement Sinner thanked Cahill for his belief, honesty and dedication, and said their friendship would continue after the coaching partnership ends. Cahill called working with Sinner “a special honour and privilege”. Neither said what Cahill will do next. Away from coaching, he has worked as a tennis analyst for ESPN since 2007.
The Cahill Years
Sinner split from his long-time coach Riccardo Piatti in February 2022 and hired Vagnozzi, and Cahill joined them in mid-2022. Sinner was 20 and had not reached a Grand Slam semi-final. In the four and a half seasons since, he has become one of the two dominant players of his generation, alongside Carlos Alcaraz.
| Year | Title | Beat in the final |
|---|---|---|
| 2024 | Australian Open | Daniil Medvedev |
| 2024 | US Open | Taylor Fritz |
| 2024 | ATP Finals | Taylor Fritz |
| 2025 | Australian Open | Alexander Zverev |
| 2025 | Wimbledon | Carlos Alcaraz |
| 2025 | ATP Finals | Carlos Alcaraz |
| 2026 | Wimbledon | Alexander Zverev |
- Five Grand Slam titles, including back-to-back Wimbledon titles in 2025 and 2026.
- Two ATP Finals titles, both in Turin.
- 10 Masters 1000 titles. His Rome title in May made him only the second man, after Novak Djokovic, to have won all nine Masters 1000 events.
- World No. 1 for the first time on 10 June 2024, and 95 weeks at the top in all.
- Two Davis Cup titles with Italy, in 2023 and 2024.
Sinner’s five majors are more than Cahill won with any of his earlier players. The Australian coached Lleyton Hewitt to world No. 1 and the 2001 US Open, Andre Agassi to the 2003 Australian Open and back to No. 1 at 33, then the oldest man to hold it, and Simona Halep to the top of the WTA rankings and the 2018 French Open. He has also worked with Andy Murray, Ana Ivanovic and Fernando Verdasco.
Who Is Magnus Norman?
Norman, 50, was born in Filipstad in Sweden and reached world No. 2 as a player on 12 June 2000. That year he won the Italian Open in Rome, beating Gustavo Kuerten in the final, and lost to Kuerten in the French Open final. He won 12 titles, was part of the Sweden team that won the Davis Cup in 1998, and retired in 2004, aged 27, after hip and knee injuries.
He has been just as successful as a coach:
- Thomas Johansson was his first player, from 2008, at the end of Johansson’s career.
- Robin Söderling reached the French Open final in 2009 and 2010 under Norman, won the Paris Masters in 2010 and climbed to world No. 4.
- Stan Wawrinka won all three of his majors with Norman: the 2014 Australian Open, beating Rafael Nadal in the final, and the 2015 French Open and 2016 US Open, beating Djokovic in both. Wawrinka also won Monte-Carlo and the Davis Cup with Switzerland in 2014.
Norman was named the ATP’s first Coach of the Year in 2016. In 2011 he founded the Good to Great Tennis Academy in Sweden with Mikael Tillström and Nicklas Kulti, and players including Wawrinka, Gaël Monfils and Grigor Dimitrov have trained there. He has just finished a second spell with Wawrinka, who played the last tournament of his career at the Swiss Indoors Basel in October. In a post announcing the move, Norman said what excited him most about Sinner was his personality and mentality.
What It Means for 2027
Sinner ended his season on 6 October with a right knee injury, so he will not defend his ATP Finals title in Turin (15 to 22 November). He lost the No. 1 ranking to Alexander Zverev on 2 November, and Zverev is now certain to finish the year at No. 1. Sinner is second in the Race to Turin on 7,950 points.
Norman’s start date of 1 December puts him in place for Sinner’s off-season training block. The 2027 season starts in January ahead of the Australian Open, which Sinner won in 2024 and 2025 and Alcaraz won in 2026. Vagnozzi, who has been with Sinner since early 2022, stays on as the constant in the team.
FAQ
Sinner Coaching Change FAQs
Who is Jannik Sinner’s coach?
Simone Vagnozzi and Darren Cahill until the end of 2026. From 1 December 2026, Magnus Norman joins Vagnozzi in Sinner’s team, and Cahill leaves after the 2026 season.
Why are Sinner and Cahill splitting?
Cahill had planned to stop coaching at the end of 2025, then stayed for one more season after Sinner won a bet tied to the 2025 Wimbledon title. The 2026 season is his last with Sinner.
Who is Magnus Norman?
A Swedish former world No. 2 who reached the 2000 French Open final. As a coach he took Robin Söderling to two French Open finals and Stan Wawrinka to three Grand Slam titles, and he was the ATP’s first Coach of the Year in 2016.
What did Sinner win with Darren Cahill?
Five Grand Slam titles (the Australian Open in 2024 and 2025, the 2024 US Open and Wimbledon in 2025 and 2026), two ATP Finals, 10 Masters 1000 titles, two Davis Cups with Italy and 95 weeks as world No. 1.
See Jannik Sinner’s profile for his career record, and our ATP rankings for the current top 50.