Players that have qualified for the ATP Finals: Rafa Nadal 🇪🇸 Roger Federer 🇨🇭 Novak Djokovic 🇷🇸 Juan Martín del Potro 🇦🇷 A. Zverev 🇩🇪

The 21-year-old joins Nadal, Federer, Djokovic and Del Potro in the season-ending event.