Novak Djokovic will likely be the happier man between him and Rafael Nadal after the groups for the ATP Finals were confirmed.
The world number one is chasing what would be a record-equalling sixth ATP Finals titles this year.
If he is to achieve it he will have to find his way out of a Tokyo 1970 group that includes Daniil Medvedev, Alexander Zverev, and Diego Schwartzman.
Rafael Nadal, meanwhile, has been handed an even tougher group.
Nadal has never won the ATP Finals, and only one of his 86 career titles has come on an indoor hardcourt.
His group, London 2020, includes US Open champion Dominic Thiem, defending ATP Finals champion Stefanos Tsitsipas, and debutant Andrey Rublev, who has won more titles this season than anyone else.
Matteo Berrettini and Denis Shapovalov, meanwhile, are the first and second alternates respectively in case of any injuries.
Group Tokyo 1970
Novak Djokovic (1)
Daniil Medvedev (4)
Alexander Zverev (5)
Diego Schwartzman (8)
Group London 2020
Rafael Nadal (2)
Dominic Thiem (3)
Stefanos Tsitsipas (6)
Andrey Rublev (7)
This year is the last time the competition will take place in London with the tournament set to move to Turin next year.
It will be played behind closed doors though due to the coronavirus crisis.
For more exclusive content from Tennisbuzz, including news, features, trivia, promotions and more, please be sure to sign up for our newsletter below or via our home page.
Why not test your tennis knowledge by tackling one of our fiendish quizzes too?