Both Carlos Alcaraz and Jannik Sinner put together incredible 2025 seasons, although Alcaraz ended the year with the No. 1 spot in the ATP rankings.

Reigning champion Jannik Sinner extended his indoor hardcourt winning streak to 29 matches with a 6-3 7-6 (3) victory over American Ben Shelton in their dead rubber round-robin match at the ATP Finals...