Michael Antonius

Michael Antonius is a 16-year-old tennis player from the United States competing on the ATP Tour. As of 5 October 2026, he holds an ATP singles ranking of 633 with 58 points, with a career high of 622. According to Tennis Post's match data, Antonius played two matches in the 2026 season, winning one. He competed in one tournament: the US Open in August 2026, a Grand Slam event, where he lost in qualifying with a record of 1–1. In the 2026 Race standings, he is positioned at 594.