Sinner's second coach, Simone Vagnozzi, confirmed the news to La Repubblica on 25/7. Cahill will be taking a break to care for a family member.

"My relationship with Cahill is very good," Vagnozzi told La Repubblica. "We divide tasks with the sole objective of helping Sinner reach his full potential. The atmosphere is always relaxed, which is something we want to maintain so Sinner can perform at his best."

Sinner celebrates his 2025 Australian Open victory with coach Cahill at Rod Laver Arena in Melbourne in January. Photo: Reuters

Sinner celebrates his 2025 Australian Open victory with coach Cahill at Rod Laver Arena in Melbourne in January. Photo: Reuters

Cahill had previously expressed his desire to retire at the end of the 2025 season. However, Sinner is confident that his Australian coach will reconsider due to his success on the court. Vagnozzi is also optimistic about Cahill continuing to work with them in 2026.

"Nothing is certain at the moment, but we would be very happy if Cahill stayed," Vagnozzi added. "We have different roles: I take care of the technical and tactical aspects, while Darren is responsible for the mental and emotional side of the game. It's not easy for the whole team to work well together, but we are becoming increasingly cohesive by always prioritizing Sinner."

Vagnozzi will be Sinner's main coach at the US Open, a tournament the Italian player will enter as the defending champion. In addition to Vagnozzi, Sinner's team also includes fitness coach Umberto Ferrara, who returned this week after being dismissed 11 months ago due to a doping incident.

The positive doping test resulted in a three-month ban for Sinner earlier this year. Despite this, the 23-year-old has maintained his form, reaching the finals of the Rome Masters and Roland Garros before winning Wimbledon in 2025.

Vy Anh