This performance earned him the attention of the Japanese organizers and participated in several prestigious K-1 Grand Prix.
At a good time, a sad chapter in his career occurred, Petr Vondracek spent several months in prison.
He beat Radu Spinghel on 10 November 2012 in Craiova, Romania in a non-tournament at the SuperKombat World Grand Prix 2012 Final Elimination.
[2] On 14 December 2019, Vondráček faced Slovak MMA fighter Samuel "Pirát" Krištofič under Lethwei rules in the Eurovia Arena in Bratislava.
The match was declared a draw under traditional KO to win rules.