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.
England interim boss Lee Carsley says their win over the Republic of Ireland has boosted his confidence - admitting he had doubts about his ability to do the job.
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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.
Este nosso é identicamente conjuntamente este ano do 4k: a SPORT TV foi o primeiro canal português a transmitir um evento desportivo, a final da Champions entre o Real Madrid e o Atlé especialmentetico Madrid, utilizando a tecnologia do 4k, de que permite aumentar em quatro vezes a capacidade da imagem. O primeiro passo em 2016 confirmou uma aposta permanente em 2017, com este início DE emissões regulares em 4k.
Tom Hanks stars in an intense thriller based on true events. VideoTom Hanks stars in an intense thriller based on true events
Las audiencias por la Kings World Cup fueron muy buenas y con todo lo qual se viene por delante en los próximos meses, la liga espera continuar ofreciendo un 'show' de que tiene el fútbol tais 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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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.
Having failed to make the most of three break point opportunities 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.
Andy Roddick, who was watching from the stands, remains the last American man to lift a major singles trophy, having won the US 米兰体育投注网站 Open in 2003.