Career
He missed selection for the 2000 Olympic Games, but competed in the 2002 UCI Track Cycling World Championships, winning the Keirin. Dajka was sent home from the 2004 pre-Olympic training camp, accused of having lied to the enquiries into the Mark French doping affair. His appeal at his expulsion and later suspension was unsuccessful.
After this, he became disillusioned and became a very heavy drinker, and gained a lot of weight.
Following a tribunal on 15 June 2005, he received a three-year ban following an assault on Martin Barras, the Australian national track coach. After suffering emotional and mental problems, Dajka had a brief stay in an Adelaide hospital suffering depression and alcohol-related stress.
Dajka"s racing licence was reinstated on 22 December 2006. His ban was lifted early in accordance with conditions set out in the 2005 tribunalthat he sought immediate medical treatment and completed 80 hours of community service.
Dajka later regained his normal health and stopped drinking, and there was talk of a comeback.
However, Dajka was found dead in his home by police on 7 April 2009. The cause of his death is unknown, but police said the death is not believed to be suspicious.