Top-ranked Jannik Sinner added another big title to his tremendous year, beating U.S. Open runner-up Taylor Fritz 6-4, 6-4 on Sunday for the ATP Finals trophy before his home fans -- and before a final verdict is reached in his doping case.

Jannik Sinner won the ATP Finals against Taylor Fritz in front of a home crowd. For a man who is still under a doping cloud, Sinner is hitting the cleanest winners.

Jannik Sinner opened up about his ongoing doping case after beating U.S. Open runner-up Taylor Fritz 6-4, 6-4 on Sunday to win the ATP Finals trophy before his home fans.