Novak Djokovic capped off an incredible season of tennis with victory over Roger Federer at the World Tour Finals in London.
Djokovic became the first player in the tournament's 46-year history to take home the trophy four years in a row.
The Serbian world number one's victory over Federer was his 82nd victory from 88 matches this year, which has brought him a cool $25.5 million dollars in prize money that he's racked up in 2015.
The 'Djoker' won the Australian Open, US Open and Wimbledon, and dropped only the French Open to Stan Wawrinka.
He also made it to at least the semifinals in all but one of the tournaments he entered.
Winning 11 titles in an astonishingly dominant campaign, take a look back through the shapes and sizes of all the championships he lifted during the year.
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