Sinner Parts Ways With Coach Darren Cahill
The split follows five years together, and Magnus Norman will join Sinner's coaching staff in December.
Updated on Nov. 6, 2026 in Tennis
Jannik Sinner and coach Darren Cahill will part company at the end of the 2026 season, a separation announced in a statement issued Friday. The two worked together for five years, during which Sinner has won five Grand Slam titles.
Why it matters
The change comes as Sinner has dropped to number two in the world rankings after Alexander Zverev took the number one spot. Sinner has not played since retaining his Wimbledon title in July.
The partnership lasted five years and produced five Grand Slam titles for Sinner, now ranked number two in the world. The reasons for the split were not disclosed in the available information.
The players
Jannik Sinner
Italian tennis player, age 25, who has won five Grand Slam titles and is currently ranked number two in the world.
Darren Cahill
Australian tennis coach who worked with Sinner for five years before the partnership ends after the 2026 season.
Magnus Norman
Former professional tennis player and coach who will join Sinner's coaching staff in December 2026.
Alexander Zverev
German tennis player who took the world number one ranking from Sinner.
The details
Magnus Norman will join Sinner's coaching staff at the beginning of December 2026, working alongside Simone Vagnozzi. Sinner is set to return from a knee injury at the end of December at the Six Kings Slam in Riyadh, Saudi Arabia.
Timeline
July 2026: Sinner retains his Wimbledon title, his fifth Grand Slam.
End of 2026 season: Sinner and Cahill part company.
Beginning of December 2026: Magnus Norman joins Sinner's coaching staff.
End of December 2026: Sinner's planned comeback at the Six Kings Slam in Riyadh.
Season Trajectory
Sinner's fall to number two in the ATP rankings reshapes the top of the men's tour as the 2026 season closes. The coaching change and his planned return from injury in Riyadh will determine whether he reclaims the top position in 2027.
Fantasy and betting players tracking the ATP rankings should note Sinner's drop to number two and his absence since July. His return at the Six Kings Slam at the end of December will be the first on-court test of the new coaching setup.
The takeaway
Coaching changes at the top of professional tennis often coincide with a player's return from injury, so the next few months will show whether the new staff can restore Sinner's ranking position.
What happens next
Sinner is scheduled to make his comeback from a knee injury at the Six Kings Slam in Riyadh at the end of December 2026, and Magnus Norman joins his coaching staff at the beginning of December.
Further reading
Explore more Tennis coverage for context on the rankings race at the top of the men's tour.
