Daniel Altmaier
Daniel Altmaier (born 12 September 1998) is a German tennis player. He has a career high ATP singles ranking of world No. 67, achieved in April 2022. Tennis career. 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. 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 Lopez, 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. 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. Singles performance timeline. "Current through the 2022 Bavarian International Tennis Championships." Record against top 10 players. Altmaier's record against players who have been ranked in the top 10, with those who are active in boldface. Only ATP Tour main draw matches are considered: