ATP Finals: Jannik Sinner begins title defence with dominant win; Taylor Fritz outclasses Musetti in opener

Defending champion Jannik Sinner began his ATP Finals title defense with a dominant 7-5, 6-1 victory over Felix Auger-Aliassime. Sinner extended his indoor hard court winning streak to 27 matches, capitalizing on Auger-Aliassime’s injury. In another match, Taylor Fritz opened his campaign with a strong 6-3, 6-4 win over Lorenzo Musetti.