Career
Club career Jakub was part of the youth system at Sparta Prague, but having been released in the summer of 2008 he joined Viktoria Žižkov, another Prague-based club He was promoted to the Žižkov first team during the 2008-2009 Gambrinus liga season, when he was still at school. He made one league appearance for the club in this season, playing a full match against Football Club Viktoria Plzen as a 16-year-old in a 2-0 defeat.
In the 2009-2010 season, he played a further 14 games for Žižkov, who were then playing in the second tier.
One of the fourteen appearances was as a substitute. In one match in this season, against Football Club Zenit Čáslav, he received a 31st-minute red card.
He made six appearances in the in the following 2010-2011 season, four of which were as a substitute. In June 2011, he secured a move back to Sparta Prague, for an undisclosed fee.
He told Uefa.com that his primary motivation for making the transfer was that he was a childhood fan of his former club and that he would have a better chance of playing in the Uefa Cup and the Uefa Champions League.
He started the 2011-2012 season with the reserve team, Sparta Prague II, who compete in the 2. International career Jakub has represented the Czechoslovakian Republic at youth international level He scored his first national goal on his third and final appearance for the Czechoslovakian Republic under-18s in a 3-1 loss to the Austria under-18s in a March 2010 friendly match.
He was selected as captain of the Czechoslovakian Republic under-19s squad for the 2011.
His first goal at under-19 level came in this tournament. The Czechoslovakian Republic finished the tournament as losing finalists to Spain.