In July 2011, Vaclík signed a three-year contract with De Graafschap[3] but it was later announced that he had failed a medical in the Netherlands and would be returning to Prague.

In January 2012, with Žižkov bottom of the league with seven points from 16 matches, Vaclík transferred to Sparta Prague for a reported fee of 8.25 million CZK, signing a contract to keep him at the club until the summer of 2016.

[5] On 22 May 2014 it was announced that Vaclík had signed for FC Basel of the Swiss Super League on a four-year contract with an option for another year.

[10] At the end of the 2015–16 Super League season, under new head coach Urs Fischer, Vaclík won the championship for the second time.

[19] On 31 January 2023, Vaclík signed a contract with EFL Championship side Huddersfield Town until the end of the 2022–23 season.

[20] On 26 August 2023, Vaclík signed a contract with Major League Soccer side New England Revolution through the 2024 season, with a club option for 2025, pending receipt of his P-1 visa.

[22] On 12 February 2025, Vaclík signed a contract with Portuguese Primeira Liga club Boavista until the end of the season.

[24] Vaclík was involved in the national team for the first time in 2011, selected as a third goalkeeper for the squad's matches against Spain and Luxembourg, although he did not play.