With Austria's Thiem having kept alive his hopes of reaching the semi-finals with a 6-3, 1-6, 6-4 victory over Gael Monfils earlier on Tuesday, Djokovic knew a win would seal his last four berth with one match still to play.
Sezonas noslēguma turnīra pirmajā mačā Džokovičs ar 6-7 (10:12), 6-0, 6-2 pieveica austrieti Dominiku Tīmu, kamēr Raoničs ar 6-3, 6-4 uzvarēja francūzi Gaelu Monfisu.