The 23-year-old held his arms aloft and looked up to the sky as he became the first player since Guillermo Vilas in 1977 to win his first two Grand Slam titles in the same season.
It was more straightforward in New York as he rarely looked troubled by Fritz, who struggled to build any momentum.
"I know we have been waiting for a champion for a long time so I'm sorry I couldn't get it done this time," said Fritz.
Tom Hanks stars in an intense thriller based on true events. VideoTom Hanks stars in an intense thriller based on true events
"He's stepped up a role and I feel like he's taking everything as seriously as he can and fair play to him, that shows he wants to stay."
He subsequently parted ways with the physio and his fitness trainer - but questions continued about whether Sinner's case had been handled differently to those of other players because of his world number one status.
But he has seemingly been able to put the controversy behind him, manoeuvring his way through tough tests against Britain's Jack Draper and 2021 champion Medvedev.
Tom Hanks stars in an intense thriller based on true events. VideoTom Hanks stars in an intense thriller based on true events
Just six days before the main draw got under way, it was announced he had twice tested positive for low levels of a metabolite of clostebol - a steroid that can be used to build muscle mass - in March.
Young Proteas seamer Kwena Maphaka is pleased with the plans in place to help him develop into a competitive bowler in all three formats of the game. 04 Sep
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It has been nearly 50 years since a man won their first and second Grand Slam titles in the same season, and Sinner is now a long way clear of the rest at the top of the rankings.
He was not at the peak of his powers for the entire two weeks, but still only dropped two sets and saved his best for 米兰体育 the final.
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