# Daniel Altmaier

Daniel Altmaier (German pronunciation:; born 12 September 1998) is a German professional tennis player. He has a career high ATP singles ranking of world No. 47, achieved on 2 October 2023. He is the current German No. 3.

## Personal life

Altmaier's father Jurij is Ukrainian and his mother Galina is Russian. He speaks Russian, German and English and fast-improving his Spanish, given that he trains in Argentina.

## Career
### 2017: ATP debut

Altmaier made his ATP main draw debut as a qualifier at the 2017 Geneva Open, defeating Alexander Ward and Petr Michnev in qualifying. He lost to Sam Querrey in the first round.
He won his first ATP tour-level match as a lucky loser at the 2017 Antalya Open when he beat Víctor Estrella Burgos. In the next round, he defeated wildcard Marsel İlhan to reach the quarterfinals, where he lost to Yūichi Sugita. Both of his victories were decided by a third set tiebreak.

### 2020: Major debut and first top-10 win

Shoulder and hip injuries held back Altmaier's progress in his tennis career, but victories in qualifying over Tallon Griekspoor and Ruben Bemelmans led to his Grand Slam debut at the 2020 French Open, where he defeated Feliciano López, 30th seed Jan-Lennard Struff and 7th seed Matteo Berrettini, all of them in straight sets. In the fourth round, he lost to Pablo Carreño Busta.

### 2021: Two ATP semifinals, Top 100 debut

In October, Altmaier recorded his first win at a Masters 1000 level on his debut at the 2021 BNP Paribas Open defeating Sam Querrey.
Altmaier made his debut in the top 100 on 15 November 2021 at World No. 98 following the final at the 2021 Knoxville Challenger. He followed this by winning his third Challenger title for the year at the 2021 Puerto Vallarta Open.

### 2022: Top 60

He made his Grand Slam debut at the 2022 Australian Open and 2022 Wimbledon Championships.
At the 2022 US Open also on his debut, he took Jannik Sinner to five sets in his first round match.

### 2023: First Masters quarterfinal, top 50

In April, Altmaier claimed his seventh Challenger title at the 2023 Sarasota Open defeating defending champion Daniel Elahi Galán. He entered the 2023 Mutua Madrid Open as a lucky loser replacing 18th seed Pablo Carreno Busta directly into the second round, for only his second time at this round at a Masters 1000 level. He defeated compatriots Oscar Otte and Yannick Hanfmann to reach the fourth round for the first time in his career at the Masters level. He reached the quarterfinals for the first time defeating Jaume Munar in straight sets and moved 30 positions back up in the top 65 in the rankings. He lost to Borna Ćorić in straight sets. He continued his good form at the 2023 French Open where he reached again the third round, defeating eight seed Jannik Sinner in five sets in 5 hours and 26 minutes, the longest match since Lorenzo Giustino against Corentin Moutet six hours, 5 minutes win in 2020, the fifth longest overall of the tournament and the second longest of the season after Kokkinakis against Murray at the Australian Open.
He qualified for the 2023 Halle Open as a lucky loser but had to withdraw last minute due to hip injury.
At the 2023 US Open, he won his first main draw match at this Major defeating Constant Lestienne. As a result he reached the top 50 in the singles rankings on 11 September 2024. At the 2023 Paris Masters, he reached the third round after a walkover from Taylor Fritz who was injured.

## Singles performance timeline

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |
Current through the 2025 Indian Wells Open.
| Tournament | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | SR | W–L | Win % |
| Grand Slam tournaments |||||||||||||
| Australian Open | A | A | A | A | A | 1R | 1R | 1R | 2R | 0 / 4 | 1–4 | 20% |
| French Open | A | A | A | 4R | A | 1R | 3R | 2R | | 0 / 4 | 6–4 | 60% |
| Wimbledon | A | A | A | NH | Q2 | 1R | 1R | 2R | | 0 / 3 | 1–3 | 25% |
| US Open | A | A | A | A | A | 1R | 2R | 1R | | 0 / 3 | 1–3 | 25% |
| Win–loss | 0–0 | 0–0 | 0–0 | 3–1 | 0–0 | 0–4 | 3–4 | 2–4 | 1–1 | 0 / 14 | 9–14 | 39% |
| National representation |||||||||||||
| Davis Cup | A | A | A | A | A | A | G1 | SF | | 0 / 0 | 2–2 | 50% |
| ATP Masters 1000 |||||||||||||
| Indian Wells Open | A | A | A | NH | 2R | 1R | A | 1R | Q1 | 0 / 3 | 1–3 | 25% |
| Miami Open | A | A | A | NH | Q1 | 1R | 1R | 2R | | 0 / 3 | 1–3 | 25% |
| Monte-Carlo Masters | A | A | A | NH | A | A | A | 1R | | 0 / 1 | 0–1 | 0% |
| Madrid Open | A | A | A | NH | A | A | QF | 3R | | 0 / 2 | 5–2 | 71% |
| Italian Open | A | A | A | A | A | A | 2R | 1R | | 0 / 2 | 1–2 | 33% |
| Canadian Open | A | A | A | NH | A | Q2 | A | Q1 | | 0 / 0 | 0–0 | – |
| Cincinnati Open | A | A | A | A | A | Q1 | 1R | Q1 | | 0 / 1 | 0–1 | 0% |
| Shanghai Masters | A | A | A | NH | NH | NH | 1R | A | | 0 / 1 | 0–1 | 0% |
| Paris Masters | A | A | A | A | A | A | 3R | A | | 0 / 1 | 1–1 | 50% |
| Win–loss | 0–0 | 0–0 | 0–0 | 0–0 | 1–1 | 0–2 | 5–6 | 3–5 | 0–0 | 0 / 14 | 9–14 | 39% |
| Career statistics |||||||||||||
| | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | Career | Career | Career |
| Tournaments | 3 | 0 | 1 | 3 | 8 | 21 | 22 | 22 | 6 | 86 | 86 | 86 |
| Hard win–loss | 0–0 | 0–0 | 0–0 | 0–2 | 1–1 | 2–11 | 3–13 | 8–11 | 6–6 | 0 / 42 | 20–44 | 31% |
| Clay win–loss | 0–2 | 0–0 | 0–1 | 3–1 | 6–6 | 1–6 | 11–8 | 4–11 | 0–0 | 0 / 35 | 25–35 | 42% |
| Grass win–loss | 2–1 | 0–0 | 0–0 | 0–0 | 0–1 | 2–4 | 0–2 | 1–1 | 0–0 | 0 / 9 | 5–9 | 36% |
| Overall win–loss | 2–3 | 0–0 | 0–1 | 3–3 | 7–8 | 5–21 | 14–23 | 13–23 | 6–6 | 0 / 86 | 50–88 | 36% |
| Year-end ranking | 275 | 370 | 279 | 130 | 84 | 94 | 56 | 89 | | | | |

## ATP Challenger finals
### Singles: 12 (7–5)

| Result | W–L | Date | Tournament | Surface | Opponent | Score |
| Loss | 0–1 | Jan 2018 | Burnie, Australia | Hard | Stéphane Robert | 1–6, 2–6 |
| Win | 1–1 | Jul 2021 | Braunschweig, Germany | Clay | Henri Laaksonen | 6–1, 6–2 |
| Win | 2–1 | Aug 2021 | Lüdenscheid, Germany | Clay | Nicolás Jarry | 7–6$^{(7–1)}$, 4–6, 6–3 |
| Loss | 2–2 | Nov 2021 | Knoxville, United States | Hard (i) | Christopher Eubanks | 3–6, 4–6 |
| Win | 3–2 | Nov 2021 | Puerto Vallarta, Mexico | Hard | Alejandro Tabilo | 6–3, 3–6, 6–3 |
| Loss | 3–3 | Mar 2022 | Phoenix, United States | Hard | Denis Kudla | 6–2, 2–6, 3–6 |
| Win | 4–3 | May 2022 | Heilbronn, Germany | Clay | Andrej Martin | 3–6, 6–1, 6–4 |
| Win | 5–3 | Oct 2022 | Lima, Peru | Clay | Tomás Martín Etcheverry | 6–1, 6–7$^{(4–7)}$, 6–4 |
| Win | 6–3 | Nov 2022 | Guayaquil, Ecuador | Clay | Federico Coria | 6–2, 6–4 |
| Win | 7–3 | Apr 2023 | Sarasota, United States | Clay | Daniel Elahi Galán | 7–6$^{(7–1)}$, 6–1 |
| Loss | 7–4 | Jun 2024 | Parma, Italy | Clay | Jesper de Jong | 6–7$^{(5–7)}$, 1–6 |
| Loss | 7–5 | Sep 2024 | Seville, Spain | Clay | Roberto Carballés Baena | 3–6, 5–7 |

## ITF Futures finals
### Singles: 17 (9–8)

| Result | W–L | Date | Tournament | Surface | Opponent | Score |
| Loss | 0–1 | Sep 2015 | Italy F26, Santa Margherita di Pula | Clay | Lorenzo Sonego | 5–7, 4–6 |
| Win | 1–1 | Jun 2016 | Belgium F2, Havré | Clay | Maxime Authom | 6–2, 6–2 |
| Win | 2–1 | Jul 2016 | Belgium F6, Knokke | Clay | Casper Ruud | 6–7$^{(3–7)}$, 6–1, 7–6$^{(7–3)}$ |
| Loss | 2–2 | Oct 2016 | Italy F33, Santa Margherita di Pula | Clay | Stefano Travaglia | 4–6, 6–2, 1–6 |
| Loss | 2–3 | Nov 2016 | Kuwait F3, Mishref | Hard | Marcus Willis | 3–6, 6–7$^{(8–10)}$ |
| Win | 3–3 | Dec 2016 | Qatar F4, Doha | Hard | Jonny O'Mara | 7–5, 6–3 |
| Loss | 3–4 | Dec 2016 | Thailand F5, Hua Hin | Hard | Kwon Soon-woo | 2–6, 2–6 |
| Win | 4–4 | Feb 2017 | Switzerland F2, Bellevue | Carpet (i) | Tim Pütz | 7–5, 7–6$^{(7–5)}$ |
| Win | 5–4 | Apr 2017 | Qatar F1, Doha | Hard | Antoine Escoffier | 6–4, 6–3 |
| Loss | 5–5 | Apr 2017 | Qatar F2, Doha | Hard | Antoine Escoffier | 2–6, 7–6$^{(7–2)}$, 4–6 |
| Loss | 5–6 | Oct 2017 | Germany F16, Hamburg | Hard (i) | Daniel Masur | 3–6, 6–3, 3–6 |
| Loss | 5–7 | Dec 2017 | Hong Kong F4, Hong Kong | Hard | Cheong-Eui Kim | 3–6, 6–3, 5–7 |
| Loss | 5–8 | Mar 2019 | M15 Sharm El Sheikh, Egypt | Hard | Viktor Durasovic | 7–6$^{(7–5)}$, 4–6, 4–6 |
| Win | 6–8 | Jun 2019 | M15 Kaltenkirchen, Germany | Clay | Christian Lindell | 6–1, 6–3 |
| Win | 7–8 | Nov 2019 | M25 Malibu, United States | Hard | Alexander Sarkissian | 6–2, 6–4 |
| Win | 8–8 | Nov 2019 | M15 East Lansing, United States | Hard (i) | Michael Geerts | 4–6, 6–3, 6–0 |
| Win | 9–8 | Dec 2019 | M15 Santo Domingo, Dominican Rep. | Hard | Jan Choinski | 6–3, 4–6, 6–4 |

### Doubles: 11 (6–5)

| Result | W–L | Date | Tournament | Surface | Partner | Opponents | Score |
| Win | 1–0 | Feb 2015 | Colombo, Sri Lanka | Clay | Tom Schönenberg | José Checa Calvo Rui Machado | 6–7$^{(6–8)}$, 6–3, [11–9] |
| Loss | 1–1 | May 2015 | Jablonec, Czech Republic | Clay | Paul Wörner | Mateusz Kowalczyk Adam Majchrowicz | 3–6, 5–7 |
| Win | 2–1 | Sep 2016 | Damme, Belgium | Clay | Marvin Netuschil | Oscar Otte Tom Schönenberg | 6–2, 6–0 |
| Win | 3–1 | Oct 2016 | Pula, Italy | Clay | Marvin Netuschil | Claudio Fortuna Omar Giacalone | 6–2, 6–0 |
| Win | 4–1 | Nov 2016 | Mishref, Kuwait | Hard | Fred Simonsson | Sanjar Fayziev Shonigmatjon Shofayziyev | 7–6$^{(7–3)}$, 6–2 |
| Loss | 4–2 | Nov 2016 | Mishref, Kuwait | Hard | Fred Simonsson | Jordi Muñoz Abreu David Pérez Sanz | 4–6, 4–6 |
| Win | 5–2 | Nov 2016 | Mishref, Kuwait | Hard | Marcus Willis | Roy de Valk Ronan Joncour | 6–1, 6–1 |
| Win | 6–2 | Feb 2017 | Bellevue, Switzerland | Carpet (i) | Marvin Netuschil | Maximilian Neuchrist David Pel | 7–5, 1–6, [11–9] |
| Loss | 6–3 | Apr 2017 | Doha, Qatar | Hard | Lucas Miedler | Markus Eriksson Milos Sekulic | 5–7, 6–3, [7–10] |
| Loss | 6–4 | Mar 2019 | Sharm El Sheikh, Egypt | Hard | Adrian Bodmer | Enrico Dalla Valle Francesco Forti | 6–4, 1–6, [7–10] |
| Loss | 6–5 | Oct 2019 | Bad Salzdetfurth, Germany | Clay (i) | Jan Choinski | Lasse Muscheites Stefan Seifert | 6–2, 3–6, [9–11] |

## Wins over top 10 players

* Altmaier has a 4–4 record against players who were, at the time the match was played, ranked in the top 10.
| Season | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
| Wins | 1 | 0 | 0 | 2 | 1 | 4 |
| # | Opponent | Rk | Event | Surface | Rd | Score | Rk |
| 2020 ||||||||
| 1. | Matteo Berrettini | 8 | French Open, France | Clay | 3R | 6–2, 7–6$^{(7–5)}$, 6–4 | 186 |
| 2023 ||||||||
| 2. | Jannik Sinner | 9 | French Open, France | Clay | 2R | 6–7$^{(0–7)}$, 7–6$^{(9–7)}$, 1–6, 7–6$^{(7–4)}$, 7–5 | 79 |
| 3. | Andrey Rublev | 7 | Hamburg Open, Germany | Clay | 2R | 6–2, 6–2 | 61 |
| 2024 ||||||||
| 4. | Alexander Zverev | 6 | Mexican Open, Mexico | Hard | 1R | 6–3, 3–6, 6–3 | 57 |