The ATP Finals is the season-ending championship of the ATP Tour. It is the most significant tennis event in the men's annual calendar after the four majors, as it features the top eight singles players and top eight doubles teams based on their results throughout the season. The eighth spot is reserved, if needed, for a player or team who won a major in the current year and is ranked from ninth to twentieth.
The tournament uses a unique format not seen in other ATP Tour events, where the singles players and doubles teams are separated into two groups of four, within which they each play three round-robin matches. After the round-robin stage, the top two performers from each group play in knock-out semifinals and a final to determine the champion(s).
The tournament was first held in 1970, shortly after the beginning of the Open Era. Novak Djokovic holds the record for the most singles titles with seven, while the doubles team of Peter Fleming and John McEnroe jointly hold the record for the most doubles titles with seven (which the pair won consecutively, 1978–1984).
In the tournament's current format, the champion can earn a maximum of 1,500 ranking points, if they win the event after going undefeated in the round-robin stage. By winning the 2025 title, Sinner earned a record $5,071,000 the highest payout for an ATP tournament winner in tennis.
