Speaks Dutch, French and English...Nickname is �Merty�...Started playing tennis aged four, with father, Kris, who owns a tennis school near Brussels...Mother, Marina, is a school teacher...Has two older brothers, Christophe � a fitness trainer � and Michael; and one younger sister, Stephanie...Prefers to play on clay and hard courts...Favourite shot is backhand...Favourite tournament is US Open...Idol growing up was Roger Federer...Hobbies include football and watching NBA basketball...Likes to play poker and go out with his friends...Physical trainer is Rudy Diels.