Jannik Sinner clinched his maiden Paris Masters title, defeating Felix Auger-Aliassime 6-4, 7-6 (7/4) to reclaim the World No.1 spot. The 24-year-old Italian's victory, combined with Carlos Alcaraz's early exit, marks his return to the top of men's tennis. It's Sinner's fifth title of the season, highlighting a remarkable comeback year.