
Volleyball groups for girls and boys run by a top-league club's coaches, whose youth teams bring home national medals most seasons.
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The youth program of Trefl Gdańsk, a men's volleyball club in Poland's top league (PlusLiga). Club coaches run girls', boys' and mixed groups at several schools and academies, and the strongest kids play in the Kinder+Sport mini-volleyball competition in twos, threes and fours. Its youth teams have won national medals every recent season.