Tennis: Novak Djokovic beats Casper Ruud to win record-equalling sixth ATP Tour Finals
Watch: The best of Novak Djokovic at ATP Finals as he equals Roger Federer’s record of six titles
Djokovic, undefeated through the tournament, beat Norwegian Casper Ruud 7-5, 6-3 in Turin to match Federer's record of six titles in the year-ender.
