Novak Djokovic won the Barclays ATP World Tour Finals title, his fourth season finale crown, when Roger Federer withdrew due to a back injury ahead of Sunday’s final at The O2 in London.
"We always give 100 per cent," said Djokovic. "I'm sure that if he could've played, he would've done. So I wish him the best in his recovery.
"I'm not one of those players that celebrates these particular wins, but I have to reflect on the whole season. This trophy is definitely the crown for all the achievements that I had this year. I owe the credit to my team, to all the people who supported me all the way through, and plenty of joy. I'm very happy to be able to stand here and finish with this trophy."