Frenkel made his professional debut on 23 September 2006, scoring a first-round
stoppage over Anton Lascek. He won his first regional championship—the vacant
IBF Youth
cruiserweight title—on 17 May 2008,
knocking out Cory Phelps in one round. After further knockout wins all throughout 2009, Frenkel won the
European cruiserweight title on 18 September 2010 after a vicious knockout of defending champion
Enzo Maccarinelli. In October 2011, having not fought in more than a year, Frenkel was forced to vacate the title. ==Professional boxing record==