"It means a lot. It is a great result," said the Italian. "One I can share with all the people who are close to me every day. It is a nice moment to share with them and we are doing the right things.
"This result makes us feel good, stronger and hungry to work even harder in the future. It’s a great moment in my career."
Sinner set the tone for a statement week by dismissing countryman Matteo Berrettini in straight sets and then halted a revitalised Gael Monfils in three sets. The world No.6 stormed towards his milestone moment 6-4, 6-4 over Tommy Paul, before his victory over de Minaur.
"I am proud how I handled the situation. Every opponent here is tough to play against," stated Sinner, assessing his sharp development.
"When you get used to playing such important encounters, you are calmer before and during the match. Today, I did everything better than in my first two finals in Masters 1000.