The 2019 Nitto ATP Finals is a professional tennis tournament for men tennis players. It is played at the end of the season between the highest ranked singles and doubles players of the 2019 ATP World Tour.
The 2019 Nitto ATP Finals will be played at the O2 Arena in London, England. It is the 50th edition of the tournament with the first one being held in 1970.
The tournament gets underway on 10th November 2019. The finals will be played on 17th November 2019.
The Tournament follows Round-Robin format.
Group Andre Agassi Qualifying
| Players | Ranking |
| Rafael Nadal | 1 |
| Daniil Mendev | 4 |
| Stefanos Tsitsipas | 6 |
| Alexander Zverev | 7 |
Group Bjorn Borg Qualifying
| Players | Ranking |
| Novak Djokovic | 2 |
| Roger Federer | 3 |
| Dominic Thiem | 5 |
| Matteo Berrettini | 8 |
Alexander Zverev won the men’s singles category against Novak Djokovic in the 2018 ATP Finals. In the doubles category, Mike Bryan and Jack Sock took the title away in the 2018 tournament of ATP Finals.
The ATP Finals follow round-robin format, which includes eight players/teams divided in two group of four. The seeds are determined by the ATP rankings . All singles matches, including the final, are best of three sets with tie-breaks in each set including the third. All doubles matches are two sets (no ad) and a Match Tie-break.
| Groupandre Agassi | Player 1 | Player 2 | Player 3 | Player 4 | W-L | SETS | GAMES |
| Player 1 | 0-0 | 0-0 | 0-0 | ||||
| Player 2 | 0-0 | 0-0 | 0-0 | ||||
| Player 3 | 0-0 | 0-0 | 0-0 | ||||
| Player 4 | 0-0 | 0-0 | 0-0 |
| Groupbjorn Borg | Player 1 | Player 2 | Player 3 | Player 4 | W-L | SETS | GAMES |
| Player 1 | 0-0 | 0-0 | 0-0 | ||||
| Player 2 | 0-0 | 0-0 | 0-0 | ||||
| Player 3 | 0-0 | 0-0 | 0-0 | ||||
| Player 4 | 0-0 | 0-0 | 0-0 |
| Stage | Points | Singles Prize Money | Doubles Prize Money |
| Round Robin(each of three) | 200 | $215,000 | $40,000 |
| Semi Finals | 400 | $657,000 | $106,000 |
| Finals | 500 | $1,354,000 | $204,000 |
| Undefeated Champions | 1500 | $2,871,000 | $533,000 |
Total Prize Money:- 9,000,000
Men's Singles
| Won | Score | Lost |
| Rafael Nadal | 6-7(4-7) , 6-4, 7-5 | Stefanos Tsitsipas |
| Alexander Zverev | 6-4, 7-6(7-4) | Daniil Medvedev |
Men's Doubles
| Won | Score | Lost |
| Pierre-Hugues Herbert/Nicolas Mahut | 6-3, 7-6(7-4) | Jean-Julien Rojer/Horia Tecau |
| Juan Sebastian Cabal/Robert Farah | 7-6, (9-7), 6-2 | Kevin Krawietz/Andreas Mies |
