Competing in three Summer Olympics, he won two medals in the K-4 1000 m with a silver in 2008 and a bronze in 2004.

Riszdorfer has also won fourteen medals at the ICF Canoe Sprint World Championships with eight golds (K-2 500 m: 1998, K-2 1000 m: 1999, K-4 500 m: 2002, 2003, 2006, 2007; K-4 1000 m: 2002, 2003), three silvers (K-4 200 m: 2009, K-4 500 m: 2005, K-4 1000 m: 2005), and three bronzes (K-4 500 m: 2001, K-4 1000 m: 2007, 2009).

He was born in Bratislava and lived in Komárno, home to a sizeable Hungarian community on the shores of the Danube, since his early childhood.

[2] He has a younger brother Richard, who is also a canoer and member of the multiple medal winning K-4 boat.

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