Career
In 2006 he joined Danish Brøndby IF"s promising youth academy, but did not get his first team debut before returning to Slovakia - when he was signed Brøndby talent boss Kim Vilfort said "Tomas is a really good ball player, and we don"t have a natural left footed back in our system.. he"s got a great potential and we can see him having the abilities af going all the way to the A-team in the long run.." He is from the same year and played together with a player such as Brøndby-defender Daniel Wass, who is one of the most promising players in the Danish Superliga in 2010-2011. Mrva joined Czechoslovakian side České Budějovice in 2009, but failed to make a first-team appearance in his time with the club