Father, Franz; mother, Claudia; brothers, Michael and Christian; sister, Alexandra.
Began playing tennis at age 6 with his older brother.
Inspired by Boris Becker, Tommy Haas and Roger Federer.
Credits his parents, current coach Dirk Hortian and college coach Eric Shore as making a big difference in his career.
Played college tennis at Auburn University from 2010-13 and was a 3-time All-American (2013 singles, 2012-13 doubles).
Earned Bachelor's degree in international business.
Favourite shot is backhand, surface is hard and tournament is Wimbledon.
Also enjoys playing and watching football. Supports Borussia Dortmund.
Favourite city on tour is Melbourne.
Secret talent is impressions and guilty pleasure is sweets.
Favourite actor is Bruce Willis, band is Coldplay and superhero is Superman.
Lists steak and fried potatoes as his favourite foods.
Favourite TV show is Kia Fussball Debatte and movie is The Shawshank Redemption.
Favourite book is The Inner Game of Tennis by W. Timothy Gallwey.
Says his best quality is ambition and his worst quality is impatience.
Serves as an ambassador for Special Olympics.
Teamed withGerman football player Bastian Oczipca during COVID-19 pandemic to deliver fruit to essential workers and residentsof Lebenshilfe, a non-profit organisation that enables people with intellectual disabilities to lead more independent lives.
Underwent right knee surgery in February 2021.
(UPDATED 5JUNE 2023)
Achieved doubles career-high No. 8 after reaching 2019 ATP Masters 1000 Paris SF w/Krawietz.
Owns 12-1 record at Roland Garros w/Krawietz, winning 2019 and 2020 titles to become 1st All-German Grand Slam men's doubles champions and 1st repeat Grand Slam champions since Mirnyi/Nestor at 2011-12 Roland Garros.
Qualified for 2019 and 2020 Nitto ATP Finals w/Krawietz, becoming 2nd All-German team to play at year-end championships (Fassbender/Pohmann in 1975).
Posted 46-9 Challenger doubles record w/Krawietz, winning 8 titles as a team including Marbella and Heilbronn in 2019.
Did not compete on ITF Junior Circuit, but played at Auburn University from 2010-13, earning Bachelor's degree in international business and 3 All-American honours (2013 singles, 2012-13 doubles).
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