Four-time Grand Slam champion Jannik Sinner will not be part of the Italy team aiming to clinch a third consecutive Davis Cup title next month.

The 24-year-old reached all four Grand Slam singles finals in 2025, winning the Australian Open and Wimbledon, and won the Six Kings Slam exhibition event in Saudi Arabia on Saturday.

Sinner is scheduled to take part in the ATP Tour Finals in Turin from 9-16 November, but Italy captain Filippo Volandri said the world number two had "not given his availability" to play at the Davis Cup in Bologna from 18-23 November.

World number one Carlos Alcaraz has been named in Spain's team.

Sinner says he has decided to miss the Davis Cup so he can have extra preparation time for the start of next season, with the Australian Open being the first Grand Slam of the year in January.

"It wasn't an easy decision, but after Turin, the goal is to get off on the right foot in Australia," Sinner told Sky Sport Italy. "It may not seem like it, but a week of preparation during that period can make all the difference.

"We won the Davis Cup in 2023 and 2024, and this time we decided this with my team."

Lorenzo Musetti and Flavio Cobolli, eighth and 22nd in the world respectively, will be the highest-ranked singles players on show for Italy, who face Austria in their quarter-final.

Volandri said: "The Davis Cup is, and will remain, always his home and I am sure that Jannik will soon be part of the team again.

"In the meantime, I can count on a group ready to fight and give everything for the blue jersey."

Sinner's absence comes after several players voiced concerns about a demanding tennis calendar in recent weeks.

After Holger Rune sustained a season-ending injury at the Nordic Open on Saturday, British number one Jack Draper posted on social media that "the tour and the calendar have to adapt if any of us are going to achieve some sort of longevity".

Alcaraz said before the Six Kings Slam, he feels players are misunderstood when they make such complaints but also play exhibition events - citing a reduced mental and physical toll at exhibitions compared with official ranking tournaments.