Jannik Sinner dedicated his US Open title victory to his aunt and made a heartbreaking confession as he added: “I don’t know how much longer I’ll have her in my life.”

The world No. 1 lifted his second Grand Slam trophy in Flushing Meadows, beating Taylor Fritz in straight sets.

He later sent a touching message to his aunt and shared his wish to see everyone have good health.

Sinner needed two hours and 16 minutes to beat first-time Grand Slam finalist Fritz, winning the last four games in a row to come through 6-3 6-4 7-5. Afterwards, the 23-year-old became emotional as he gave his aunt a shout-out.

“This title for me means so much because the last period of my career was really not easy,” the world No. 1 started. “There is my team who supports me every day, the people who are close to me. I love tennis, I practise a lot for this kind of stages but I also realise that off the court there is a life.”

Turning his attention to his aunt, he continued: “I would like to dedicate this title to my aunt because she is really not feeling well health-wise, I don’t know how much longer I’ll have her in my life.”

The two-time Grand Slam champion was also comforted by the knowledge that she would be able to enjoy his victory, adding: “It’s so nice that I can share positive moments still with her. She was a very important person for my life and she still is. So if that would be the biggest wish, I would wish everyone the best health to everyone but unfortunately it’s not possible.”

The smile was back on Sinner’s face when he was reminded that he came into the tournament with low expectations and managed to lift the title. Asked how he got it done, he laughed. “I did pretty well, I guess,” the Italian replied.

“Well, it’s – you know, we just went day by day, trying to practice well even in the days off, believing in ourselves which is the most important. I understood especially this tournament how important the mental part is in this sport and I guess in every sport. I’m very happy, very proud to share this moment with my team.”

Sinner also had a message for the Arthur Ashe Stadium fans, who had been rooting for Fritz. The world No. 12 was bidding to become the first American man to win a Grand Slam title since 2003 but the top seed spoiled their party.

“I know there are a lot of people watching from home but I would like to thank everyone for being so fair in this amazing arena, it was a huge pleasure,” he told the crowd, earning a rousing applause.