Tien, 19, is the youngest man to beat a Top 3 player since 2022, and the youngest American man to do it since 2001.

The 19-year-old won an all-lefty encounter in straight sets over the Frenchman, who struggling with cramping in the third set Saturday.

The 19-year-old thanked his parents, commended the crowd—and, at nearly 3 a.m., said he had to pee.