Jannik Sinner opened his title defence at the ATP Finals with a commanding win over a hampered Felix Auger-Aliassime, energising the Turin crowd with a 7-5 6-1 victory. The Italian second seed was dominant on serve and closed out the match in straight sets as Auger-Aliassime struggled with a left calf problem.
Auger-Aliassime had matched Sinner early and was two points from forcing a tie-break at 5-6 in the first set, but a tweak to his calf changed the match. The Canadian called for the physiotherapist twice in the second set and managed only a single game as movement and accuracy were affected.
The win places Sinner atop the Bjorn Borg Group as he chases the year-end world No. 1 ranking. He enters Turin on an impressive run on indoor hard courts — this marked his 27th straight win on the surface — and has not lost to a top-10 opponent other than Carlos Alcaraz since a defeat by Andrey Rublev in August 2024, a tournament where Sinner played two matches in one day.
Sinner’s serving was a key factor: he won 24 of 27 first-serve points, did not lose a single point behind his first delivery, faced no break points and was taken to deuce only once across 10 service games. He finished
