Career
Madarassy competed for Hungary in the men"s 100 m butterfly at the 2008 Summer Olympics in Beijing. Leading up to the Games, he registered a time of 54.28 to eclipse the FINA B-cut (5470) by 0.42 of a second at the United States of America Swimming Grand Prix in Columbus, Ohio. Madarassy failed to advance into the semifinals, as he placed fiftieth out of 66 swimmers in the prelims.