History of Daniel Altmaier in Timeline

Daniel Altmaier is a German professional tennis player. He achieved a career-high ATP singles ranking of world No. 44 on January 5, 2026, and is currently the No. 2 German singles player. He is known for his accomplishments in the world of professional tennis.

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Full Timeline

September 1998: Daniel Altmaier's Birth

On September 1998, Daniel Altmaier was born. He is a German professional tennis player.

Others born on this day/year

2017: ATP Main Draw Debut at Geneva Open

In 2017, Daniel Altmaier made his ATP main draw debut as a qualifier at the Geneva Open, defeating Alexander Ward and Petr Michnev in qualifying, but lost to Sam Querrey in the first round.

2017: First ATP Tour-Level Match Win

In 2017, Daniel Altmaier won his first ATP tour-level match as a lucky loser at the Antalya Open against Víctor Estrella Burgos. He defeated Marsel İlhan to reach the quarterfinals, where he lost to Yūichi Sugita, with both victories decided by a third set tiebreak.

2020: Longest Match since 2020

At the 2023 French Open Daniel Altmaier defeated 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.

2020: Grand Slam Debut at French Open

In 2020, Daniel Altmaier made his Grand Slam debut at the French Open, defeating Feliciano López, Jan-Lennard Struff, and Matteo Berrettini in straight sets, before losing to Pablo Carreño Busta in the fourth round.

November 2021: Top 100 Debut and Challenger Title

On November 15, 2021, Daniel Altmaier made his debut in the top 100 at World No. 98 following the final at the Knoxville Challenger. He won his third Challenger title for the year at the Puerto Vallarta Open.

2021: First Masters 1000 Win

In October 2021, Daniel Altmaier recorded his first win at a Masters 1000 level on his debut at the BNP Paribas Open, defeating Sam Querrey.

2022: Grand Slam Debuts

In 2022, Daniel Altmaier made his Grand Slam debut at both the Australian Open and Wimbledon Championships.

2023: Withdrawal from Halle Open

In 2023, Daniel Altmaier qualified for the Halle Open as a lucky loser but had to withdraw last minute due to a hip injury.

2023: First US Open Main Draw Win

In 2023, Daniel Altmaier won his first main draw match at the US Open, defeating Constant Lestienne. He also reached the third round at the Paris Masters.

2023: Seventh Challenger Title and Madrid Open Quarterfinals

In April 2023, Daniel Altmaier claimed his seventh Challenger title at the Sarasota Open. He reached the quarterfinals at the Mutua Madrid Open, moving him back up in the top 65 in the rankings before losing to Borna Ćorić.