Novak Djokovic will try to make history at the ATP Finals as he tries to join Roger Federer as the only 6-time champions of the event.

The Serb, who didn’t make it out of the round-robin last year, has qualified for the ATP Finals for a 13th time and is the big favorite to win for the first time since 2015.

“The ATP Finals is probably the biggest event that we have in our sport,” Djokovic said during media day Friday. “It’s probably the ultimate challenge in a season: facing the top eight guys of the year in a group stage format, it’s one of the most special events that we have in our sport.”

Djokovic was placed in a tough group with Paris champion Daniil Medvedvev, 2018 Finals winner Alexander Zverev and first-time Diego Schwartzman who he faces on Monday.

“Zverev and Medvedev are probably in the best form of anyone at this tournament indoors,” Djokovic added. “They’ve won two tournaments in a row and played in the finals in Paris. Those guys are very tall and have big serves and lots of weapons from the back of the court, solid backhands and forehands also. They’re complete players both of them and similar styles. You have to be at your best to win against those guys the way they’re playing indoors.”

Djokovic won his first 23 matches of 2020, but has gone 16-3 since. His last indoor title came at the 2019 Paris Masters.

The Serb has already locked up a sixth year-end No. 1 which ties him with Pete Sampras for the most in that department.

“Coming into the tournament knowing I already clinched the year-end No. 1 releases some of the pressure definitely, but at the same time it doesn’t change what I hope to achieve in this tournament and why I’m here,” Djokovic said. “I really want to win every single match that I get to play and try to get my hands on the trophy and I want this trophy as much as anyone here.”

The final London event — the tournament moves to Turin, Italy next year — will be fanless due to the COVID pandemic.