The climax to the 2025 ATP Tour season is upon us again with the season-ending ATP Finals set for Turin, live on Sky Sports Tennis from Sunday.

World No 1 Alexander Zverev is chasing his third crown at the event, while Carlos Alcaraz will try to lift the trophy in Turin for the first time.

Ben Shelton, Daniil Medvedev, Flavio Cobolli, Arthur Fils, Frances Tiafoe and Rafael Jodar make up the field.

The tournament has been contested in major cities around the world, with a rich history dating back to the birth of The Masters in Tokyo (1970), and continues this year at Turin's Inalpi Arena.

[1] Alexander Zverev
[3] Ben Shelton
[6] Arthur Fils
[8] Rafael Jodar

[2] Carlos Alcaraz
[4] Daniil Medvedev
[5] Flavio Cobolli
[7] Frances Tiafoe

What is the format?

The Nitto ATP Finals is structured as a round-robin format, with eight singles players/doubles teams divided into two groups of four.

All singles matches are the best of three tie-break sets. All doubles matches are best of three sets, with the first two sets played as tie-break sets with no ads and the final set played as a match tie-break.

Each player/team plays the three other players/teams in his group.

The winner of each group is placed in separate semi-final brackets, with the top player/team in Group A playing the runner-up in Group B, and vice versa.

Where are Sinner and Djokovic?

Defending champion Jannik Sinner will not be in Turin after announcing in October that his season had come to an early end due to a knee injury which kept him out of the US Open, while Novak Djokovic failed to qualify for just the second time since 2017 after falling short at the Paris Masters with a second-round defeat to Rinky Hijikata.

What is the schedule?

Players earn 200 points per round-robin match victory, 400 points for a semi-final win and 500 points for winning the tournament

Main Draw Round-Robin Matches: Sunday November 15 - Friday November 20

Afternoon session starts at 12.30am (doubles), 3pm (singles)

Evening session 7pm (doubles), not before 9.30pm (singles)

Afternoon session starts at 1pm (doubles), 3.30pm (singles). Evening session not before 7pm (doubles), not before 9.30pm (singles)

Doubles final at 4pm and singles final at 7pm

What is the Prize money?

Undefeated Champion: £3,850,000
Final Win: £1,800,000
Semi-Final Win: £900,000,000
Each Round-Robin Match Win: £300,000
Participation Fee: £250,000*
Alternate:£115,000
[*Pro-rated on a per-match basis: 1 match: £125,000 | 2 matches: £190,000 | 3 matches: £250,000]

Most titles, singles: Novak Djokovic (7)

Oldest champion: Novak Djokovic, 36, in 2023

Youngest champion: John McEnroe, 19, in 1978

Highest-ranked champion: No. 1s Ilie Nastase (1973), Jimmy Connors (1977), Bjorn Borg (1979-80), John McEnroe (1984), Ivan Lendl (1985-87), Pete Sampras (1994, 1996-97), Lleyton Hewitt (2002), Roger Federer (2004, 2006-07), Novak Djokovic (2012, 2014-15), Andy Murray (2016) and Jannik Sinner (2024)

Lowest-ranked champion: No. 12 David Nalbandian in 2005

Last home champion: Jannik Sinner in Turin in 2025

Most match wins: Roger Federer (59)

What about the doubles?

Brits Henry Patten and Neal Skupski have both qualified.

Patten and Harri Heliovaara - No.1-ranked team and defending champions - will be the team to beat in Turin this year.

The British, Finnish duo have won five ATP titles this season, including their second Wimbledon trophy during the summer.

They will be joined by Skupski and American partner Christian Harrison.

Skupski and Harrison have won two titles this year, with both coming at Grand Slam events - the Australian Open and the US Open.

Stream tennis with no contract on NOW and the Sky Sports App. You can watch the WTA Finals from Indian Wells this week on Sky Sports Tennis.