Speaks German, French and English…Nickname is “G”…Started playing tennis aged three with his parents…Father, Gernot, works for Mercedes; mother, Clarissa, works for Volkswagen; sister, Nadine, is a flight attendant…Will marry Roxanne Jones on 15 May 2015…Likes all surfaces and favourite shot is return…Favourite tournament is Bastad…Idols growing up were Pete Sampras, Andre Agassi, Gustavo Kuerten, Andy Roddick and Rafael Nadal…If he wouldn’t be a tennis player he’d like to be a “sports manager or involved in investments”…Hobbies include reading books, economics, computer games and spending time with friends and family…Supports FC Köln (Cologne)…Trains in Solingen…Physical trainer is Mike Diel.