Began playing tennis aged four, when he received a tennis racquet as a present...Nickname is "Gojo"...Father, Reinhard; mother, Maria; sister, Alexandra...Favourite surface is hard and shot is backhand down the line...Favourite tournament is the Australian Open...Idol growing up was Roger Federer...Hobbies include football, snowboarding and cooking...Supports Bayern Munich football club...Practice at the Sport-Scheck Allwetteranlage (Scheck-ProBase) in Munich...Physical trainer is Heiss Florian.