Career
Klobucnik is also a resident athlete for J&T Sport Team Bratislava, and is coached and trained by Gabriel Baran. Klobucnik qualified for the men"s 200 m breaststroke at the 2012 Summer Olympics in London, by breaking a long-course Slovak record and eclipsing a FINA B-cut of 2:13.10 from the European Championships in Debrecen, Hungary. He challenged seven other swimmers on the second heat, including four-time OIympian Jakob Jóhann Sveinsson of Iceland.
He raced to third place by less than 0.11 of a second behind Poland"s Slawomir Kuczko in 2:13.40.
Klobucnik failed to advance into the semifinals, as he placed twenty-third overall in the preliminaries.