Born in Ostrov nad Ohří, Csaplár began playing football at the age of 12 at Spartak Příbram.
In 1998, he was made head coach of the first team in the Czech First League, but was dismissed in November after amassing only six points from his twelve games in charge.
[1] In September 2008, he became the manager of Czech first division side Viktoria Žižkov, replacing Stanislav Griga, but in November he was sacked after just 55 days in the job, with the club at the bottom of the league table.
In December 2014, after six years, Csaplár returned to Czech first division scene, when he was together with Jiří Kotrba appointed as a coach of Slovan Liberec.
He has popularized terms such as "Csaplár's trap", "festival of easy losses" or "heavy poor quality" in the Czech football community.