FIBA Europe
Verginis was a member of the Greek junior national teams. He played with Greece's junior national teams at the following tournaments: the 2003 FIBA Europe Under-16 Championship, the 2004 FIBA Europe Under-18 Championship, the 2005 FIBA Europe Under-18 Championship, the 2006 FIBA Europe Under-20 Championship, and the 2007 FIBA Europe Under-20 Championship.