Jannik Sinner has won five titles this year, including two Grand Slams
Jannik Sinner began his ATP Finals title defence by sweeping aside a physically hampered Felix Auger-Aliassime in front of a passionate Turin crowd.
Italian second seed Sinner was imperious on serve in a 7-5 6-1 win over the Canadian.
Eighth seed Auger-Aliassime was brilliantly aggressive in a competitive first set and was two points away from forcing a tie-break before tweaking his left calf.
The 25-year-old called for the physiotherapist twice in the second set, where he won just one game.
