Video - Sinner, Unhappy with His Performance Against Diallo, Returns to Training

Despite a 6-2, 7-5 victory over world No. 35 Gabriel Diallo, Jannik Sinner decided to return to training after his match.

The Italian was dissatisfied with his serve during the match, landing only 50% of his first serves. To address this, he went to a practice court late in the evening to work on his serves.

It remains to be seen whether this extra practice will have a positive impact on his next match against Adrian Mannarino.