Rafael Nadal, Dominic Thiem and Andrey Rublev have been drawn in the same round-robin group as defending champion Stefanos Tsitsipas for the ATP Finals in London.
The 50th anniversary of the first staging of the event has been marked with the naming of two round-robin groups, Tokyo 1970 and London 2020.
The tournament, which starts on Sunday, will be held played at London's O2 Arena.
Usually a hugely-popular week for tennis fans, this year's tournament will be held behind closed doors due to the COVID-19 pandemic, which has forced another lockdown in London.
Group Tokyo 1970
- Novak Djokovic
- Daniil Medvedev
- Alexander Zverev
- Diego Schwartzman
Group London 2020
- Rafael Nadal
- Dominic Thiem
- Stefanos Tsitsipas
- Andrey Rublev
Stefanos Tsitsipas- Greek professional tennis player
He is the youngest player ranked in the top 10 by the Association of Tennis Professionals and has a career-high ranking of No. 5 in the world, making him the highest-ranked Greek player in history.