LONDON — There is one more match to play this season, and there is plenty riding on it for both Novak Djokovic and Roger Federer.
Djokovic, who has had the best season of his career with three Grand Slam titles, will attempt to cap it by becoming the first man to win four straight titles at the ATP World Tour Finals. Federer, however, could add to his record six titles on Sunday while also proving he can still beat the top-ranked Djokovic in big matches.
“When he’s on, it’s hard to play him,” Djokovic said of Federer, who has reached his 10th championship match in the World Tour Finals, the season-ending tournament for the top eight players in the world.