Novak saved four match points in the second set and led 4-0 in the third set tie-break, but haven't made it into the Nitto ATP Finals championship match. Dominic Thiem clinched a 7-5, 6-7 (10), 7-6 (5) win in three hours. The Serbian star has enjoyed another exceptional season, capturing four titles, and has finished as world no.1 for the sixth time in the past 10 years.