Father, Thomas, is an engineer; mother, Marianne, is a pharmacist; sister, Bettina.
Introduced to tennis by his parents, who both played.
Played college tennis from 2013-16 at Tulane University in New Orleans, LA, USA. Two-time All-American. Earned finance degree.
Favourite shot is backhand, surface is clay, tournament is Australian Open and city on tour is Melbourne.
Grew up idolising countryman Tommy Haas.
Also enjoys golf, skiing, football and basketball.
Favourite sports team is Bayern Munich (football) and favourite athlete is basketball player Dirk Nowitzki.
Favourite TV show is The Big Bang Theory.
Lists schnitzel as his favourite food and Hershey's chocolate as his guilty pleasure.
Favourite school subject was math.
Limited to 4 tournaments during 1st 5 months of 2022 season due to left arm injury.
(UPDATED 21 AUGUST2023)
Improved year-end ranking in 6 straight seasons (2016-21), breaking into Top 100 in 2019 and achieving career-high No. 50 in 2021. Finished year-end best No. 54 that year.
After starting 2023 with 0-3 Challenger record and ranking down to No. 262, qualified at Mexico City and won title (d. Tirante) and followed with runner-up at San Luis Potosi (l. to Barrios Vera). In May, reached Prague-2 final and followed with Turin title (d. Gaio), his 4th career Challenger title.
Did not drop a set en route to 1st ATP Tour SF at 2021 Acapulco (l. to No. 7 Zverev).
Qualified and made ATP Masters 1000 main draw debut at 2020 Rome, where he earned biggest win of career over No. 9 Monfils en route to 1st ATP Tour QF.
Posted 6 wins en route to 2019 US Open 4R as Q, then reached 3R at Roland Garros, Wimbledon, Tokyo Olympics and ATP Masters 1000 Paris in 2021.
Earned finance degree and was a 2-time All-American at Tulane University in New Orleans (2013-16).
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