Only two singles places remain in the Nitto ATP Finals, with four players in contention for those spots.
Frances Tiafoe and Rafael Jodar are currently are currently in qualifying position. But Taylor Fritz and Tommy Paul have a chance to shake things up at the Rolex Paris Masters, where they are still competing.
In quarter-final action Friday, Fritz will face Carlos Alcaraz and Paul will play Ben Shelton.
Tiafoe, who is trying to make his Nitto ATP Finals debut, will qualify as long as Paul does not defeat Fritz in the Paris final.
Jodar, who is also trying to qualify for the first time, will earn his place in Turin if Alcaraz defeats Fritz in their quarter-final and Paul does not reach the final.
Fritz also has a chance to lock in his fourth appearance at the prestigious season-ending event. The 29-year-old American will qualify if he reaches the final, or he reaches semi-finals and Paul does not reach the final.
Paul can make his Turin debut if he wins the title in Paris, or reaches the final and Fritz does not reach the final.
The 2026 Nitto ATP Finals will take place in Turin, Italy, from 15-22 November. Alexander Zverev, Alcaraz, Shelton, Daniil Medvedev, Flavio Cobolli and Arthur Fils have already qualified.