Alex Michelsen is an American right-hander whose game is built on a big serve, a heavy forehand and an unusually literal approach to scouting an opponent. At 6ft 4in he has the reach and the delivery to hold cheaply, and he has spent his early professional years turning that into a steady top-50 presence rather than a sudden ascent.
Background
Alex T. Michelsen was born on 25 August 2004 in Aliso Viejo, California, and came up through the dense junior tennis culture of Southern California. He plays right-handed with a two-handed backhand and stands 1.93m.
His junior record was strong without ever being overwhelming. He was a boys’ doubles runner-up at the 2022 Australian Open alongside Daniel Vallejo, and later that year swept both the singles and doubles titles at the Easter Bowl, the first American to take both at that event since Donald Young. He also won the Wimbledon boys’ doubles title in 2022 partnering Sebastian Gorzny. He had a college path available to him and turned professional in 2023 instead.
Game
Michelsen is an aggressive baseliner who uses his height to serve big and his forehand to take time away. The pattern is straightforward: hold comfortably, look to hit through the middle of the court, and wait for the return games where an opponent’s own pattern gives something up.
What distinguishes him is what he does before the match. Michelsen practises regularly with the other Americans on tour and treats those sessions as reconnaissance, on the reasoning that a player’s habits show up in practice more honestly than in match footage. He has described watching a rival’s earlier matches, identifying the serve location that opponent returns to under pressure, and building his return position around removing it.
The corresponding weakness has been the double fault. His serve is a weapon that carries risk, and matches where the first-serve percentage dips have historically been the ones he loses.
Career to date
Michelsen reached a career-high singles ranking of world No. 30 on 14 July 2025, and a career-high doubles ranking of No. 67 in June of the same year. He has reached ATP singles finals without yet converting one into a title.
Grand Slam bests
- Australian Open — fourth round (2025), beating Stefanos Tsitsipas along the way
- Roland Garros — third round (2026)
- Wimbledon — first round (2024, 2025)
- US Open — third round (2026)
He is coached by Kristof Vliegen, having previously worked with Robby Ginepri and Craig Boynton. Career prize money stands at roughly four million dollars.
Season Snapshot — 3 September 2026
Michelsen is ranked world No. 46. An oblique injury shortened his grass-court season. At the US Open he reached the third round of the tournament for the first time, beating the No. 16 seed and world No. 17 Brandon Nakashima 6-3, 6-4, 6-4 in an all-American second round, having identified and neutralised Nakashima’s preferred big-point serve in the ad court. It was his second win in ten attempts against a top-20 opponent in 2026, and his fourth Grand Slam third round.
Rankings and season figures in this section are current as of the date shown and will change.
