India, Oct. 20 -- Novak Djokovic finished fourth at the Six Kings Slam after retiring from his match against Taylor Fritz. The Serbian ace lost the first set (7-6) in 75 minutes and then decided to retire due to physical issues. Reports state that he is suffering from a groin injury, which he sustained at the Shanghai Masters.

Despite his disappointing retirement in Riyadh, Djokovic is aiming for a full recovery and plans to rest over the coming weeks. He could also miss next week's Paris Masters but is expected to feature at the ATP Finals in Turin.

"Now it's time to rest and really address some of the issues I have with my body. Then, hopefully, I can play the last couple of tournaments of the season. Let's see," he said, in Riyadh. ...