LONDON - Novak Djokovic finished the best season of his life in fitting style as the world number one defeated Roger Federer 6-3, 6-4 on Sunday to win the ATP Tour Finals title for a record fourth successive year.
Serbia's Novak Djokovic celebrates on day seven of the ATP World Tour Finals tennis tournament in London on November 21, 2015
Djokovic is the first player in the tournament's 46-year history to take home the trophy four years in a row and he joins Pete Sampras and Ivan Lendl on five victories at the season-ending event.
Only Federer, with six Tour Finals crowns, has won the tournament more times.