Career
As a player he played in the Czechoslovak First League until its conclusion in 1993, after which he continued in the Gambrinus liga for one season before finishing his professional playing career in 1994. He has managed three clubs in the Gambrinus liga, firstly České Budějovice followed by Most and most recently Bohemians Prague. As a player, Žák played as a midfielder.
He played a total of 111 matches and scored 18 goals in the Czechoslovak First League, representing Slavia Prague, Hradec Králové and České Budějovice before the league"s discontinuation in 1993.
After the formation of the Gambrinus liga in 1993, Zak went on to play one more league season, playing 27 matches and scoring 4 goals for České Budějovice. Žák"s first position as a football manager commenced in October 2004, when he was announced as the replacement for Pavel Tobiáš at Gambrinus liga side České Budějovice.
He signed a two-year contract with the club, although due to a run of seven consecutive defeats which left the club last in the table, he was replaced by František Cipro in March 2005. Žák was appointed manager at Most in the summer of 2007, replacing outgoing manager Zdeněk Ščasný.
He had previously worked with the youth teams at the club
Most finished the 2007-2008 season in last place and were relegated to the Czechoslovakian 2. Liga, although Žák refused to resign despite pressure from fans to do southern He was finally relieved of his duties at Most three matches before the end of the 2008-2009 season.
Žák was appointed as manager of Bohemians Prague, replacing Luboš Urban before the start of the 2009-2010 Gambrinus liga.
Despite his recent appointment, Žák was the first league manager of the season to lose his job in August 2009, with the club failing to score any points in their opening four league matches. Žák took over at Litvínov of the Czechoslovakian Fourth Division in the summer of 2010.
His spell in charge lasted just a short time as he was sacked in September 2010 following a run of four matches without scoring a point.