Began playing tennis at age six with his father, Svatopluk, who is a tennis coach; mother, Eva, is a school teacher...Has one younger sister, Radka, who is a student...Nicknamed "Hajecek", "Hajos" and "Gejza"...Hobbies include playing football and watching hockey...Growing up, admired Andre Agassi along with countryman, hockey superstar Jaromir Jagr...Considers clay his favourite surface and backhand his best shot...Says, his goal is "to get into Top 50 of ATP Rankings and to stay there as long as I can".