Alex de Minaur has been knocked out of the Australian Open in the fourth round. Is this the year he advances further?

Alex de Minaur has never made it past the fourth round at the Australian Open, but he'll have the opportunity to change that on Monday. In his way, though, is rising star Alex Michelsen. The 20-year-old American upset Stefanos Tsitsipas in the opening round before defeating both James McCabe and Karen Khachanov in straight sets.

Watch the match highlights between Francisco Cerundolo & Alex de Minaur in Round 3 of the 2025 Australian Open.

Two of four American men still playing in Melbourne, Irvine native Tien, 19, and Aliso Viejo native Michelsen, 20, became friends on the youth tennis circuit

MELBOURNE, Australia — Alex Michelson joked that he was too busy at the Australian Open on Saturday morning to have a lengthy phone conversation with his mother back home in California. His excuse was pretty good, actually: The 20-year-old Michelsen was on court for a 6-3, 7-6 (5), 6-2 victory over No. 19 seed Karen Khachanov.

Stefanos Tsitsipas twice smashed his racket onto his bag as he exited the Australian Open in the first round against young American Alex Michelsen. Tsitsipas, who is enduring a miserable run of Grand Slam form,