Hamzik was discovered by Joey DeMaio in the rock club Agora Ballroom in Hollywood, FL when a mutual friend brought DeMaio down to see Hamzik play. It was not until a year later, when Manowar had secured their record deal with Liberty Records, that DeMaio and Ross the Boss went to Florida and played together with Hamzik and recorded their debut album Battle Hymns. At that point, Hamzik was officially a member of Manowar.
Hamzik left the band in 1983 and was replaced by Scott Columbus. He again appeared with Manowar on stage during "Earthshaker" Fest 2005 in Germany along with all other Manowar members past and present.
On October 15, 2010, DeMaio announced on Facebook that Hamzik was officially a member of Manowar again after a 26-year absence.
- "Archived copy". Archived from the original on 2014-02-13. Retrieved 2014-09-05. CS1 maint: discouraged parameter (link) CS1 maint: archived copy as title (link)
- "MANOWAR Recruits Drummer From Brazilian Tribute Band KINGS OF STEEL For 'Final Battle' Tour". BLABBERMOUTH.NET. 2017-11-16. Retrieved 2017-11-17.