There's something about Frances Tiafoe in New York City.

Facing the unseeded Alex Michelsen in the US Open quarterfinals, the fan favorite American looked lost after two sets and more, only to roar back for a 5-7, 3-6, 7-5, 6-3, 7-6 win. His reward will either be No. 2 Carlos Alcaraz or No. 8 Ben Shelton in the semifinals on Friday.

The match came down to a final 10-point tiebreaker, which Tiafoe ended with a passing shot winner. It was an exhilarating win for Tiafoe and a heartbreaking collapse for his friend Michelsen, who could be seen crying as the two shared a post-match embrace.