LONDON, England (AP) — Two-time defending champion Novak Djokovic has been handed a favourable draw at the ATP World Tour Finals, while Roger Federer and Andy Murray will meet in the round-robin phase.

The top-seeded Djokovic, who won his 20th Masters title in Paris on Sunday, was placed in the same group with Australian Open champion Stan Wawrinka, US Open winner Marin Cilic and Tomas Berdych for the season-ending, eight-man tournament, which starts Sunday in London.

“Two successive titles in London in the last two years gave me reason to believe that I can do well,” said Djokovic after winning in Paris, where he did not drop a set during the whole week.

The in-form Federer, meanwhile, is in Group B along with Murray and newcomers Kei Nishikori and Milos Raonic.

Djokovic has a combined career record of 41-5 against his group, while Federer leads his round-robin opponents 19-14.

Djokovic, this year’s Wimbledon champion, is unbeaten on indoor courts the past two years and is vying with Federer for the year-end number one ranking. The Serb extended his lead over the 17-time Grand Slam champion to 1,310 points as he bids to finish the year on top for the third time.

“It helps that I’m playing well, and that I’m feeling good about myself on the court playing indoors,” Djokovic said. “Every match that I play, every match that I play and win, gets me closer to holding number one the end of the year.”

Federer’s quarter-finals loss in Paris against Raonic has hampered his bid to overtake Djokovic in London, where a potential 1,500 points are up for grabs.

Rafael Nadal is skipping the tournament after undergoing appendix surgery yesterday.

Cilic, Raonic and Nishiroki are newcomers at the elite tournament, while Berdych is competing for the fifth straight year.