Gadzuric, a center, attended preparatory school at The Governor's Academy in Byfield, Massachusetts, before playing college basketball for the Bruins at University of California, Los Angeles (UCLA).

On June 22, 2010, Gadzuric and Charlie Bell were traded to the Golden State Warriors for Corey Maggette[1] after spending eight years with the Bucks.

On February 23, 2011, Gadzuric was traded to the New Jersey Nets along with Brandan Wright in exchange for Troy Murphy and a second round pick.

On July 16, 2012, Gadzuric, Jared Jeffries, the rights to Giorgos Printezis and Kostas Papanikolaou and a 2016 second round pick were traded to the Portland Trail Blazers for Kurt Thomas and Raymond Felton.

He made his debut on December 26, 1997, in an exhibition game against Cuba at the Haarlem Basketball Week.