Career
He has been selected to compete for Hungary in two editions of the Olympic Games (2000 and 2004), and has been a resident athlete for 15 years at the Hungarian Training Center (Hungarian: Magyar Testgyakorlók Köre in Budapest, under the tutelage of his longtime coach György Wossala. Hajdu made his first Hungarian team, as a 25-year-old yachtsman, at the 2000 Summer Olympics in Sydney, where he finished fifteenth in the Finn class with a grade of 102. Unlike his previous Games, Hajdu fared poorly throughout the eleven-race series on 183 points to obtain a thirty-third overall position from a fleet of twenty-five sailors.