Daniel Altmaier
German tennis player (born 1998)
Daniel Altmaier (German pronunciation: [ˈdaːni̯eːl ˈʔaltmaɪɐ, -ni̯ɛl -]; born 12 September 1998) is a German professional tennis player. He has a career-high ATP singles ranking of world No. 44 achieved on 5 January 2026 and a doubles ranking of No. 197 achieved on 27 July 2026. As of June 2026, he is the No. 4 German singles player.
01Personal life
Altmaier's father Jurij is Ukrainian and his mother Galina is Russian. He speaks German, English, Russian, and Spanish, the last he claims he learned through his Mexican girlfriend.
02Career
2017: ATP Tour 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 Tour 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 major 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 Carreño 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.
2026
03Performance timelines
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |
Singles
Current through the 2026 US Open.
| Tournament | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | SR | W-L | Win % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grand Slam tournaments | |||||||||||||
| Australian Open | A | A | A | A | A | 1R | 1R | 1R | 2R | 1R | 0 / 5 | 1-5 | 17% |
| French Open | A | A | A | 4R | A | 1R | 3R | 2R | 4R | 1R | 0 / 6 | 9-6 | 60% |
| Wimbledon | A | A | A | NH | Q2 | 1R | 1R | 2R | 1R | 1R | 0 / 5 | 1-5 | 17% |
| US Open | A | A | A | A | A | 1R | 2R | 1R | 3R | 1R | 0 / 5 | 3-5 | 38% |
| Win-loss | 0-0 | 0-0 | 0-0 | 3-1 | 0-0 | 0-4 | 3-4 | 2-4 | 6-4 | 0-4 | 0 / 21 | 14-21 | 40% |
| National representation | |||||||||||||
| Davis Cup | A | A | A | A | A | A | G1 | SF | A | 0 / 0 | 2-2 | 50% | |
| ATP 1000 tournaments | |||||||||||||
| Indian Wells Open | A | A | A | NH | 2R | 1R | A | 1R | Q1 | 1R | 0 / 4 | 1-4 | 20% |
| Miami Open | A | A | A | NH | Q1 | 1R | 1R | 2R | 1R | 1R | 0 / 5 | 1-5 | 17% |
| Monte-Carlo Masters | A | A | A | NH | A | A | A | 1R | 3R | 1R | 0 / 3 | 2-3 | 40% |
| Madrid Open | A | A | A | NH | A | A | QF | 3R | 1R | 1R | 0 / 4 | 5-4 | 56% |
| Italian Open | A | A | A | A | A | A | 2R | 1R | 1R | 2R | 0 / 4 | 2-4 | 33% |
| Canadian Open | A | A | A | NH | A | Q2 | A | Q1 | 1R | 2R | 0 / 2 | 1-2 | 33% |
| Cincinnati Open | A | A | A | A | A | Q1 | 1R | Q1 | 1R | 2R | 0 / 3 | 1-3 | 25% |
| Shanghai Masters | A | A | A | NH | 1R | A | 2R | 0 / 2 | 1-2 | 33% | |||
| Paris Masters | A | A | A | A | A | A | 3R | A | 3R | 0 / 2 | 3-2 | 60% | |
| Win-loss | 0-0 | 0-0 | 0-0 | 0-0 | 1-1 | 0-2 | 5-6 | 3-5 | 5-8 | 3-7 | 0 / 29 | 17-29 | 37% |
| Career statistics | |||||||||||||
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Career | |||
| Tournaments | 3 | 0 | 1 | 3 | 8 | 21 | 22 | 22 | 28 | 25 | Career total: 133 | ||
| Hard win-loss | 0-0 | 0-0 | 0-0 | 0-2 | 1-1 | 2-11 | 3-13 | 8-11 | 15-18 | 3-10 | 0 / 64 | 32-66 | 33% |
| Clay win-loss | 0-2 | 0-0 | 0-1 | 3-1 | 6-6 | 1-6 | 11-8 | 4-11 | 6-7 | 8-11 | 0 / 53 | 39-53 | 42% |
| Grass win-loss | 2-1 | 0-0 | 0-0 | 0-0 | 0-1 | 2-4 | 0-2 | 1-1 | 1-3 | 4-4 | 0 / 16 | 10-16 | 38% |
| Overall win-loss | 2-3 | 0-0 | 0-1 | 3-3 | 7-8 | 5-21 | 14-23 | 13-23 | 22-28 | 15-25 | 0 / 133 | 81-135 | 38% |
| Year-end ranking | 275 | 370 | 279 | 130 | 84 | 94 | 56 | 89 | 46 | ||||
Doubles
Current through the 2026 Halle Open.
| Tournament | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | SR | W-L |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grand Slam tournaments | ||||||||||||
| Australian Open | A | A | A | A | A | 2R | 1R | 2R | A | A | 0 / 3 | 2-3 |
| French Open | A | A | A | A | A | 1R | A | A | A | A | 0 / 1 | 0-1 |
| Wimbledon | A | A | A | NH | A | 1R | 1R | A | A | A | 0 / 2 | 0-2 |
| US Open | A | A | A | A | A | 1R | A | A | A | 0 / 1 | 0-1 | |
| Win-loss | 0-0 | 0-0 | 0-0 | 0-0 | 0-0 | 1-4 | 0-2 | 1-1 | 0-0 | 0-0 | 0 / 7 | 2-7 |
| Career statistics | ||||||||||||
| Tournaments | 1 | 0 | 2 | 1 | 2 | 11 | 3 | 3 | 1 | 2 | 26 | |
| Titles | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Finals | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | |
| Overall win-loss | 0-1 | 0-0 | 0-2 | 0-1 | 1-2 | 2-11 | 1-2 | 1-3 | 0-1 | 4-2 | 9-25 | |
| Year-end ranking | 697 | , | 627 | 596 | 406 | 329 | 880 | 568 | , | 26% | ||
04ATP Tour finals
Doubles: 1 (runner-up)
|
|
|
| Result | W-L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Loss | 0-1 | Jun 2026 | Halle Open, Germany | ATP 500 | Grass | João Fonseca | Théo Arribagé Albano Olivetti |
6-7(2-7), 4-6 |
05ATP Challenger Tour finals
Singles: 13 (7 titles, 6 runner-ups)
| Finals by surface |
|---|
| Hard (1-3) |
| Clay (6-2) |
06ITF Tour finals
Singles: 17 (9 titles, 8 runner-ups)
| Finals by surface |
|---|
| Hard (5-6) |
| Clay (3-2) |
| Carpet (1-0) |
| Result | W-L | Date | Tournament | Surface | Opponent | Score |
|---|---|---|---|---|---|---|
| Loss | 0-1 | Sep 2015 | F26 Santa Margherita di Pula, Italy | Clay | Lorenzo Sonego | 5-7, 4-6 |
| Win | 1-1 | Jun 2016 | F2 Havré, Belgium | Clay | Maxime Authom | 6-2, 6-2 |
| Win | 2-1 | Jul 2016 | F6 Knokke, Belgium | Clay | Casper Ruud | 6-7(3-7), 6-1, 7-6(7-3) |
| Loss | 2-2 | Oct 2016 | F33 Santa Margherita di Pula, Italy | Clay | Stefano Travaglia | 4-6, 6-2, 1-6 |
| Loss | 2-3 | Nov 2016 | F3 Mishref, Kuwait | Hard | Marcus Willis | 3-6, 6-7(8-10) |
| Win | 3-3 | Dec 2016 | F4 Doha, Qatar | Hard | Jonny O'Mara | 7-5, 6-3 |
| Loss | 3-4 | Dec 2016 | F5 Hua Hin, Thailand | Hard | Kwon Soon-woo | 2-6, 2-6 |
| Win | 4-4 | Feb 2017 | F2 Bellevue, Switzerland | Carpet (i) | Tim Pütz | 7-5, 7-6(7-5) |
| Win | 5-4 | Apr 2017 | F1 Doha, Qatar | Hard | Antoine Escoffier | 6-4, 6-3 |
| Loss | 5-5 | Apr 2017 | F2 Doha, Qatar | Hard | Antoine Escoffier | 2-6, 7-6(7-2), 4-6 |
| Loss | 5-6 | Oct 2017 | F16 Hamburg, Germany | Hard (i) | Daniel Masur | 3-6, 6-3, 3-6 |
| Loss | 5-7 | Dec 2017 | F4 Hong Kong (China SAR) | 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, US | Hard | Alexander Sarkissian | 6-2, 6-4 |
| Win | 8-8 | Nov 2019 | M15 East Lansing, US | Hard (i) | Michael Geerts | 4-6, 6-3, 6-0 |
| Win | 9-8 | Dec 2019 | M15 Santo Domingo, Dominican Republic | Hard | Jan Choinski | 6-3, 4-6, 6-4 |
Doubles: 11 (6 titles, 5 runner-ups)
| Finals by surface |
|---|
| Hard (3-3) |
| Clay (2-2) |
| Carpet (1-0) |
| Result | W-L | Date | Tournament | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|
| Win | 1-0 | Feb 2015 | ITF Colombo, Sri Lanka | Clay | Tom Schönenberg | José Checa Calvo Rui Machado |
6-7(6-8), 6-3, [11-9] |
| Loss | 1-1 | May 2015 | ITF Jablonec, Czech Republic | Clay | Paul Wörner | Mateusz Kowalczyk Adam Majchrowicz |
3-6, 5-7 |
| Win | 2-1 | Sep 2016 | ITF Damme, Belgium | Clay | Marvin Netuschil | Oscar Otte Tom Schönenberg |
6-2, 6-0 |
| Win | 3-1 | Oct 2016 | ITF Pula, Italy | Clay | Marvin Netuschil | Claudio Fortuna Omar Giacalone |
6-2, 6-0 |
| Win | 4-1 | Nov 2016 | ITF Mishref, Kuwait | Hard | Fred Simonsson | Sanjar Fayziev Shonigmatjon Shofayziyev |
7-6(7-3), 6-2 |
| Loss | 4-2 | Nov 2016 | ITF Mishref, Kuwait | Hard | Fred Simonsson | Jordi Muñoz Abreu David Pérez Sanz |
4-6, 4-6 |
| Win | 5-2 | Nov 2016 | ITF Mishref, Kuwait | Hard | Marcus Willis | Roy de Valk Ronan Joncour |
6-1, 6-1 |
| Win | 6-2 | Feb 2017 | ITF Bellevue, Switzerland | Carpet (i) | Marvin Netuschil | Maximilian Neuchrist David Pel |
7-5, 1-6, [11-9] |
| Loss | 6-3 | Apr 2017 | ITF Doha, Qatar | Hard | Lucas Miedler | Markus Eriksson Milos Sekulic |
5-7, 6-3, [7-10] |
| Loss | 6-4 | Mar 2019 | ITF Sharm El Sheikh, Egypt | Hard | Adrian Bodmer | Enrico Dalla Valle Francesco Forti |
6-4, 1-6, [7-10] |
| Loss | 6-5 | Oct 2019 | ITF Bad Salzdetfurth, Germany | Clay (i) | Jan Choinski | Lasse Muscheites Stefan Seifert |
6-2, 3-6, [9-11] |
07Wins over top 10 players
- Altmaier has a 8-13 record against players who were, at the time the match was played, ranked in the top 10.
| # | 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 | |
| 2025 | ||||||||
| 5. | Taylor Fritz | 4 | French Open, France | Clay | 1R | 7-5, 3-6, 6-3, 6-1 | 66 | |
| 6. | Casper Ruud | 9 | Paris Masters, France | Hard (i) | 2R | 6-3, 7-5 | 50 | |
| 2026 | ||||||||
| 7. | Ben Shelton | 6 | Hamburg Open, Germany | Clay | 2R | 4-6, 7-6(7-4), 6-4 | 65 | |
| 8. | Daniil Medvedev | 7 | Halle Open, Germany | Grass | QF | 6-4, 6-7(6-8), 6-4 | 81 | |
Sources and credits
This article is adapted from the Wikipedia article “Daniel Altmaier”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Altmaier RG22 (24) (52144567090).jpg by si.robi, CC BY-SA 2.0
Fathomly is not affiliated with or endorsed by the Wikimedia Foundation. Spotted a problem? Tell us.