If Nadal fails to win even one spherical robin match, Djokovic might be topped world primary just by reaching the ultimate after two group-stage wins.
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Novak Djokovic and Roger Federer were drawn in the same group for this month's year-ending ATP Finals in London while new world number one Rafa Nadal was drawn with defending champion Alexander Zverev in the tournament's draw on Tuesday. Medvedev is a highly unsafe player, but he's going to be up against two other talents as well in the shape of reigning ATP Finals London champion Alexander Zverev and Greek sensation Stefanos Tsitsipas. On the other hand, Djokovic has won the tournament five times.Nadal has qualified for the season finale for a record 15th consecutive year.
Alternatively, the Serb can also guarantee top-dog status by winning the tournament if his rival does not make the semi-finals.
"I have unbelievable memories from here past year winning the title".
Djokovic will be hoping to edge past the Spaniard and overturn the 640 points gap between the two.
The pair will do battle in the Bjorn Borg group at the O2 Arena and are joined by Dominic Thiem and Italian debutant Matteo Berrettini. The world number one gave fans a major scare with the injury coming close to the 2019 ATP Finals. But Djokovic has been a cut above and his win over Stefanos Tsitsipas in the semi-finals of the Paris Masters was clinical and he didn't let his opponent relax for a moment.