But Sinner soon quashed those dreams, breaking back as Fritz attempted to serve for the set and doing the same two games later to wrap up the win after two hours and 16 minutes.
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.
"It's nice I can still share these moments with her. She is an important person in my life and still is.
Sinner was ruled to bear pelo 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.
A mediados do semana ya calentaron el ambiente con el despliegue por una gigantesca lona en Madrid, donde podía apreciarse la silueta do un jugador encapuchado. El secreto ha sido desvelado y, sin duda, no ha dejado a los aficionados indiferentes.
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.
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?
Having failed to make the most of three break point opportunities 米兰体育app early in the third set, Fritz brought the crowd to life with two brilliant winners to break for a 4-3 lead and keep alive his hopes.
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