# Alex Michelsen

Alex T. Michelsen (born August 25, 2004) is an American professional tennis player. He has a career high ATP singles ranking of world No. 33, achieved on 17 February 2025 and a doubles ranking of No. 90, achieved in January 2025. He is currently the youngest player ranked in the world's top 50.

## Junior career

Michelsen won the singles and doubles title at the 2022 Easter Bowl, becoming the first American champion in both disciplines since Donald Young in 2006. He also won the 2022 Wimbledon Boys' doubles title with Sebastian Gorzny. He was committed to play college tennis at the University of Georgia, but then decided to turn pro.

## Professional career
### 2022: Grand Slam doubles debut

In August 2022, Michelsen made his Grand Slam doubles debut at the US Open playing alongside Sebastian Gorzny, losing in the first round.
In November 2022, Michelsen won his first title on the ITF Tour in East Lansing.

### 2023: Turning Pro, ATP, Major & Top 100 debuts, First ATP final & Challenger title

In February, Michelsen reached his first Challenger final in Rome, USA, losing to Jordan Thompson. In March, Michelsen received a qualifying wildcard for the 2023 BNP Paribas Open in Indian Wells.
In June, he made his ATP debut at the 2023 Mallorca Championships as a lucky loser, losing in the first round to eventual champion Christopher Eubanks. In July, Michelsen won his first Challenger title in Chicago, defeating Yuta Shimizu in the finals. Later that month, he reached his first final on the ATP Tour at the 2023 Hall of Fame Open in Newport, where he lost to second seed Adrian Mannarino. Michelsen turned professional two weeks later, foregoing his college eligibility and in August, he made his debut at a Major when he received a wildcard into the men's singles event at the US Open. He defeated Albert Ramos Viñolas in straight sets to progress to the second round where he lost to 23rd seed Nicolás Jarry. As a result, he reached a new career high of No. 117 on 11 September 2023. At the same tournament, he also enters the mixed doubles competition with Robin Montgomery and reached the second round on his debut.
Next he reached the semifinals at the 2023 Cary Challenger II but lost to eventual champion Zachary Svajda. He won his second Challenger in Knoxville and made his top 100 debut. In November, he qualified for the 2023 Next Generation ATP Finals.

### 2024: Major third round, Masters debut & first wins & doubles final, top 50

He reached the third round at the 2024 Australian Open defeating wildcard James McCabe and 32nd seed Jiří Lehečka on his debut at this Major. As a result, he reached the top 75 in the singles rankings.
At the 2024 Dallas Open he defeated qualifier Tennys Sandgren but lost to top seed Frances Tiafoe. The following week at the 2024 Delray Beach Open, he defeated Thanasi Kokkinakis in straight sets. He lost to Dallas champion Tommy Paul in a tight match with a third set tiebreak. At the next tournament, the 2024 Los Cabos Open, in the following week, he entered as an alternate and defeated another alternate player Constant Lestienne. He recorded the biggest win and first top 10 win of his career, defeating newly arrived top 10 player and the fourth seed, previous year runner-up Alex de Minaur in straight sets, losing only five games, to reach the quarterfinals. He lost to eventual champion Jordan Thompson after winning the first set 6-0 and having three match points. At the 2024 BNP Paribas Open, he recorded his first Masters win over Jaume Munar on his debut. At the age of 19, he became the youngest American player to win a match at this level since Taylor Fritz and Frances Tiafoe were both winners at that same age in Miami in 2017. He lost again to fellow American, 17th seed Tommy Paul. He also made his debut at the 2024 Miami Open and recorded his first win over qualifier Lukáš Klein in straight sets.
He recorded his first ATP clay court win at the 2024 BMW Open in Munich with a win over wildcard Max Hans Rehberg. He reached the top 65 on 20 May 2024, following his first round losses at the 2024 Mutua Madrid Open and at the Italian Open and a second round loss at the Challenger 2024 Open de Oeiras II. A week later he entered the top 60 after reaching his first ATP clay court quarterfinal with a win over third seed and compatriot Taylor Fritz at the 2024 Geneva Open, his second top 15 win.
With his first grass court win of the season over Nuno Borges in Mallorca, he became the youngest player to win a match at the tournament. As a result, he reached the top 55 in the singles rankings. Michelsen reached a consecutive final at the 2024 Hall of Fame Open, defeating Reilly Opelka in the semifinals before losing to Marcos Giron.
At the 2024 Cincinnati Open he reached the second round and improved his career-high to world No. 52 on 19 August 2024. In doubles, at the same tournament, he reached his first ATP and Masters 1000 doubles final as a wildcard pair, partnering Mackenzie McDonald, with a win over world No. 1 pair of Marcel Granollers and Horacio Zeballos. At the next North American swing tournament, the 2024 Winston-Salem Open, he reached the semifinals defeating Márton Fucsovics, Zizou Bergs, and Christopher Eubanks. By making his second final of the season, after the retirement of wildcard Pablo Carreño Busta, he reached the top 50 on 26 August 2024. At the US Open, he recorded his second win at this Major defeating qualifier and compatriot Eliot Spizzirri. He qualified for the main draw of the 2024 Japan Open Tennis Championships and upset fourth seed Stefanos Tsitsipas, his second top 20 win of his career and then fellow qualifier Christopher O'Connell to reach the quarterfinals.

### 2025: First Grand Slam top 15 win and fourth round

At the 2025 Australian Open, Alex Michelsen faced again 11-seed Stefanos Tsitsipas and won in four sets to secure his first top 15 win in a Grand Slam. Next he defeated local wildcard James McCabe and 19th seed Karen Khachanov to reach the fourth round of a Grand Slam for the first time in his career.

## Performance timelines

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |

### Singles

Current through the 2025 BNP Paribas Open.
| Tournament | 2023 | 2024 | 2025 | SR | W–L | Win % |
| Grand Slam tournaments |||||||
| Australian Open | A | 3R | 4R | 0 / 2 | 5–2 | 71% |
| French Open | A | 1R | | 0 / 1 | 0–1 | 0% |
| Wimbledon | A | 1R | | 0 / 1 | 0–1 | 0% |
| US Open | 2R | 2R | | 0 / 2 | 2–2 | 50% |
| Win–loss | 1–1 | 3–4 | 3–1 | 0 / 6 | 7–6 | 54% |
| ATP Tour Masters 1000 |||||||
| Indian Wells Masters | Q1 | 2R | 3R | 0 / 2 | 2–2 | 50% |
| Miami Open | A | 2R | | 0 / 1 | 1–1 | 50% |
| Monte-Carlo Masters | A | Q1 | | 0 / 0 | 0–0 | – |
| Madrid Open | A | 1R | | 0 / 1 | 0–1 | 0% |
| Italian Open | A | 1R | | 0 / 1 | 0–1 | 0% |
| Canadian Open | A | 1R | | 0 / 1 | 0–1 | 0% |
| Cincinnati Masters | A | 2R | | 0 / 1 | 1–1 | 50% |
| Shanghai Masters | A | 2R | | 0 / 1 | 1–1 | 50% |
| Paris Masters | A | 2R | | 0 / 1 | 1–1 | 50% |
| Win–loss | 0–0 | 5–8 | 1–1 | 0 / 9 | 6–9 | 40% |
| Career statistics |||||||
| Tournaments | 5 | 29 | 7 | Career total: 41 | Career total: 41 | Career total: 41 |
| Titles | 0 | 0 | 0 | Career total: 0 | Career total: 0 | Career total: 0 |
| Finals | 1 | 2 | 0 | Career total: 3 | Career total: 3 | Career total: 3 |
| Overall win–loss | 7–8 | 34–30 | 11–7 | 0 / 41 | 52–45 | 54% |
| Year-end ranking | 97 | 42 | | | | |

## Significant finals
### Masters 1000 tournaments
#### Doubles: 1 (1 runner-up)

| Result | Year | Tournament | Surface | Partner | Opponents | Score |
| Loss | 2024 | Cincinnati Open | Hard | Mackenzie McDonald | Marcelo Arévalo Mate Pavić | 2–6, 4–6 |

## ATP Tour finals
### Singles: 3 (3 runners-up)

* Legend
* Grand Slam (0–0)
* ATP Finals (0–0)
* ATP Masters 1000 (0–0)
* ATP 500 (0–0)
* ATP 250 (0–3)
* Finals by surface
* Hard (0–1)
* Clay (0–0)
* Grass (0–2)
* Finals by setting
* Outdoor (0–3)
* Indoor (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Jul 2023 | Hall of Fame Open, United States | ATP 250 | Grass | Adrian Mannarino | 2–6, 4–6 |
| Loss | 0–2 | Jul 2024 | Hall of Fame Open, United States | ATP 250 | Grass | Marcos Giron | 7–6$^{(7–4)}$, 3–6, 5–7 |
| Loss | 0–3 | Aug 2024 | Winston-Salem Open, United States | ATP 250 | Hard | Lorenzo Sonego | 0–6, 3–6 |

### Doubles: 1 (1 runner-up)

* Legend
* Grand Slam (0–0)
* ATP Finals (0–0)
* ATP Masters 1000 (0–1)
* ATP 500 (0–0)
* ATP 250 (0–0)
* Finals by surface
* Hard (0–1)
* Clay (0–0)
* Grass (0–0)
* Finals by setting
* Outdoor (0–1)
* Indoor (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Aug 2024 | Cincinnati Open, United States | ATP 1000 | Hard | Mackenzie McDonald | Marcelo Arévalo Mate Pavić | 2–6, 4–6 |

## ATP Challenger and ITF World Tennis Tour finals
### Singles: 9 (4 titles, 5 runners-up)

* Legend
* ATP Challenger Tour (2–2)
* ITF WTT (2–3)
* Finals by surface
* Hard (4–5)
* Clay (0–0)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Feb 2023 | Georgia's Rome Challenger, USA | Challenger | Hard (i) | Jordan Thompson | 4–6, 2–6 |
| Win | 1–1 | Jul 2023 | Chicago Men's Challenger, USA | Challenger | Hard | Yuta Shimizu | 7–5, 6–2 |
| Win | 2–1 | Nov 2023 | Knoxville Challenger, USA | Challenger | Hard (i) | Denis Kudla | 7–5, 4–6, 6–2 |
| Loss | 2–2 | Nov 2023 | Champaign–Urbana Challenger, USA | Challenger | Hard (i) | Patrick Kypson | 4–6, 3–6 |
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Oct 2022 | M15 Winston-Salem, USA | WTT | Hard (i) | Toby Samuel | 1–6, 5–7 |
| Win | 1–1 | Nov 2022 | M15 East Lansing, USA | WTT | Hard (i) | Alexander Kotzen | 7–6$^{(7–2)}$, 6–1 |
| Loss | 1–2 | Jan 2023 | M25 Malibu, USA | WTT | Hard | Arthur Fery | 4–6, 6–2, 4–6 |
| Win | 2–2 | Jan 2023 | M15 Edmond, USA | WTT | Hard (i) | Lucas Renard | 6–7$^{(5–7)}$, 7–6$^{(7–4)}$, 6–1 |
| Loss | 2–3 | Mar 2023 | M25 Calabasas, USA | WTT | Hard | Nathan Ponwith | 3–6, 7–6$^{(7–5)}$, 5–7 |

### Doubles: 2 (1 title, 1 runner-up)

* Legend
* ATP Challenger Tour (0–0)
* ITF WTT (1–1)
* Finals by surface
* Hard (1–1)
* Clay (0–0)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Aug 2022 | M15 Memphis, USA | WTT | Hard | Cooper Williams | Millen Hurrion Finn Reynolds | 0–6, 1–6 |
| Win | 1–1 | Nov 2022 | M15 East Lansing, USA | WTT | Hard (i) | Learner Tien | Joshua Goodger Emile Hudd | 6–4, 6–3 |

## Junior Grand Slam finals
### Doubles: 2 (1 title, 1 runner-up)

| Result | Year | Tournament | Surface | Partner | Opponents | Score |
| Loss | 2022 | Australian Open | Hard | Adolfo Daniel Vallejo | Bruno Kuzuhara Coleman Wong | 3–6, 6–7$^{(3–7)}$ |
| Win | 2022 | Wimbledon | Grass | Sebastian Gorzny | Gabriel Debru Paul Inchauspé | 7–6$^{(7–5)}$, 6–3 |

## Wins over top 10 players

* Michelsen has a 1–6 record against players who were, at the time the match was played, ranked in the top 10.
| Season | 2024 | Total |
| Wins | 1 | 1 |
| # | Player | Rk | Event | Surface | Rd | Score | Rk | Ref |
| 2024 |||||||||
| 1. | Alex de Minaur | 9 | Los Cabos Open, Mexico | Hard | 2R | 6–4, 6–1 | 74 | |
* Key: (Rk) first use, opponent rank; (Rd) round; (Rk) 2nd use, player rank; (Ref) reference; (F) final; (SF) semifinal; (QF) quarterfinal; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage
    *As of 21 February 2024

## Equipment

Michelsen's equipment of choice includes the Babolat Pure Aero racket, complemented by RPM Blast strings.