American Frances Tiafoe is relishing his "Cinderella story" at the U.S. Open this year, producing a career breakthrough performance to reach a Grand Slam semifinal for the first time.

With U.S. hopes resting on his shoulders, Tiafoe rose to the occasion with a 7-6 (7-3), 7-6 (7-0), 6-4 win over Russian Andrey Rublev in the quarterfinals.

The 24-year-old has carried the weight of enormous expectations throughout his career, winning his sole ATP title in Delray in early 2018 before stunning the Australian Open field to reach the quarterfinals roughly a year later. The road since has been less smooth.