Novak Djokovic secured the 101st title of his career with victory at the Hellenic Championships – but then had to withdraw from the ATP Finals because of injury.

The Serb came through a gruelling encounter against Italy’s Lorenzo Musetti in Saturday’s final in Athens, fighting back from a set down to win 4-6 6-3 7-5.

But the 24-time Grand Slam champion’s victory came at a price, with Djokovic exacerbating an “ongoing” shoulder injury that will keep him out of the ATP Finals in Turin, which begin on 9 November.

“I was really looking forward to competing in Turin and giving my best but after today’s final in Athens, I’m sad to share that I need to withdraw due to an ongoing injury,” Djokovic wrote on social media.

“I’m truly sorry to the fans who were hoping to see me play – your support means so much. I wish all the players an amazing tournament, and I can’t wait to be back on the court with you all soon.”

Djokovic, 38, will be replaced in the finals by Musetti – who thought his chance of featuring in Turin had gone following his defeat.

On a day of thrilling tennis on the ATP tour, Great Britain’s Cameron Norrie missed out on a sixth career title as American teenager Learner Tien roared back to claim his first via a deciding set tie-break at the Moselle Open in France.

Norrie, 30, who was aiming for his first title in more than two years, produced a gutsy display to battle from a set down, then a break down in the deciding set.

And he led 5-1 in the tie-break before letting 19-year-old Tien back into it with a series of unforced errors, eventually losing 6-3 3-6 7-6 (8-6).