Began playing tennis at age 6 with his parents, Dieter and Martina, who are both tennis coaches.
Favourite surface is clay, shot is backhand and tournament is Roland Garros.
Lists Rome and Miami as his favourite cities on tour.
Idol growing up was Pete Sampras.
Favourite musician is Bushido, movie is The Pursuit of Happyness and book is Gluckskinder by Hermann Scherer.
Big football fan who supports Borussia Dortmund.
Favourite food is pizza.
Donated $2,000 to bushfire relief in Australia during 2020 ATP Cup.
(UPDATED 23 AUGUST 2024)
Achieved career-high No. 21 in June 2023 after reaching 3rd ATP Tour final in Stuttgart (l. to Tiafoe).
Upset No. 5 Tsitsipas at 2023 Madrid en route to becoming the 1st lucky loser in ATP Masters 1000 series history (since 1990) to reach the championship match (l. to Alcaraz).
On home soil, advanced to 1st ATP Tour singles final at 2021 Munich, earned biggest win of career over No. 2 Medvedev in 2021 Halle 1R and at age 33 became the 3rd oldest player to win 1st ATP Tour title at 2024 Munich.
Defeated No. 10 Goffin en route to 1st ATP Masters 1000 QF at 2020 Cincinnati and No. 4 Ruud en route to 2nd ATP Masters 1000 QF at 2023 Monte Carlo.
Posted personal-best 35 victories in 2019, highlighted by 1st Grand Slam 4R appearance at Roland Garros.
In 2018, became 1st player in Open Era to rally from 2 sets down in Wimbledon 1R and 2R (d. L. Mayer and Karlovic).
Lost in qualifying at 20 tour-level events before qualifying for 1st time at 2013 Roland Garros and earning 1st tour-level win at 2013 Wimbledon as Q (d. Kavcic).
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