Max Westphal

In 2017, Westphal went from 77th to 6th place in the European U-14 Junior Rankings after reaching the final of the Tim Essonne, one of the most prestigious trophies in the U-14 circuit of the Tennis Europe Junior Tour.^[2] He later stated: "My good result at the Tim Essonne allowed me to have confidence in my game, and to have a better mentality".^[2]

In September 2021, Westphal won the boys' doubles category at the US Open, with Coleman Wong. The pair defeated eight seeds Viacheslav Bielinskyi and Petr Nesterov in the final.^[3]

He reached an ITF junior combined ranking of No. 24 on 25 January 2021.^[4]

Westphal studied and played tennis at Columbia University.^{[citation needed]}

In October 2025, Westphal reached his first ATP Challenger final, in the doubles category at the Crete Challenger, partnering with David Poljak. Later that month, he earned his first Challenger doubles title, at the Monastir Open, playing alongside compatriot Corentin Denolly.^{[citation needed]}