Jannik Sinner and Carlos Alcaraz are poised to add another entry into their rapidly developing rivalry when the ATP Finals open Sunday without any members of the Big Three for the first time in nearly a quarter century.

French Open and Wimbledon champion Carlos Alcaraz will face second seed Alexander Zverev in the group stage at the ATP Finals starting on Sunday in Turin. They headline the John Newcombe Group, which will also feature Casper Ruud and Andrey Rublev.

Jannik Sinner and Carlos Alcaraz have been placed in different groups for the ATP Finals in Turin. That means the earliest they could meet is the semifinals.