[1] Zadick's international wrestling career began in 1996, after he graduated from the University of Iowa.

[2] Zadick was a two-time All-American for the University of Iowa, where he was coached by the legendary Dan Gable.

[4] After retiring from competition in 2008, Zadick was named the Resident Coordinator and Assistant National Coach for USA Wrestling.

[1] Zadick was instrumental in bringing 2013 Junior World gold medalist wrestler Kyle Snyder to the United States Olympic Training Center,[5] and helped coached Kyle Snyder to a Junior World Championship in August 2013.

In June 2016, Zadick was named the head coach of the United States Senior Freestyle team, beginning after the 2016 Olympics.