Novak completed the 2016 season with a 65-9 W/L record and seven titles won, and finished year as no. 2 for the second time in his career.
Nole continued his bid for a fifth consecutive WTFs title with a 7-6 (6), 7-6 (5) win over Milos Raonic.
Novak completed dream season capturing a career-high 11th title of the year and fifth ATP World Tour Finals trophy (b.Federer 6-3, 6-4)
Top seed and defending champion suffered his sixth match loss of a season on Tuesday in his second RR match at the Barclays ATP World Tour Finals.