The 18-year-old won five fights in the championships in Poreč, western Croatia.
After two qualifying victories, she defeated France’s Morgane Fereol in the quarter-finals and Israel’s Shaked Amihai in the semi-finals.
In the final, Sobierajska beat Portugal’s Joana Crisostomo.
Last year, Sobierajska won the Women's Cadet European Judo Open, as well as a medal in the Cadet European Judo Championship.
(jh/pk)
Source: Interia Sport