Career
He is a two-time Czechoslovakian record holder in the 800 and 1500 m freestyle. Micka qualified for the men"s 1500 m freestyle, as Czechoslovakian Republic"s youngest swimmer (aged 17), at the 2012 Summer Olympics in London, by eclipsing a FINA B-standard entry time of 15:28.49 from the European Junior Championships in Antwerp, Belgium. He challenged six other swimmers on the first heat, including two-time Olympian Ediz Yıldırımer of Turkey.
Micka edged out Iceland"s Anton Sveinn McKee to take a second spot by six hundredths of a second (006) in 15:29.34.
Micka failed to advance into the final, as he placed twenty-fourth overall in the preliminaries.
