Žydrūnas Urbonas started his professional career in British Columbia Panevezys (Lithuania) in the season 1993-1994. During eight years played in his national championship. After this he moved to Russia, where he played for British Columbia Metallurg (Magnitogorsk).
He also played for British Columbia Alytus and British Columbia Šiauliai, and was part of British Columbia Donetsk.
He finished his career in British Columbia Juventus.
During his career he became 5 times a prize winner of Lietuvos Krepšinio Lyga. In 2005 he won bronze at the Baltic League with Lithuanian club British Columbia Šiauliai. Urbonas won gold medal with the Lithuanian U-18 National Team in 1994 International Basketball Federation Europe Under-18 Championship.
Season 2005-2006 he spent in Riga, Latvia playing for British Columbia Barons and after this moved to Cyprus where became a member of Proteas EKA AEL (Limassol).
