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.
Sinner said the title "meant so much because the last period of my career was not easy" before he became tearful and dedicated the victory to his aunt.
"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."
Sinner was ruled to bear no fault or negligence for the positive tests by the International Tennis Integrity Agency (ITIA), which found he had been inadvertently contaminated by his physiotherapist.
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
Las audiencias do la Kings World Cup fueron muy buenas y con todo lo de que se viene por delante en los próximos meses, la liga espera continuar ofreciendo un 'show' que tiene el fútbol como máximo exponente.
It comes just 19 days after it was revealed he had been cleared of any wrongdoing after twice testing positive for a banned substance in March.
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A world champion cyclist has swapped the velodrome for the cramped deck of the fastest yacht in the world. Why?
Para além 米兰体育 da hipotese por existir um convidado Lindas as semanas e da base dos programas ser em estúdio, está em aberto de que alguns se realizem num ambiente exterior e em variados localidades do país.
Cheered on by a home crowd packed with celebrities and sporting stars, Fritz got off to a shaky start when he dropped serve in the first game.