Alexander Petkovic succesfully defends GBU heavyweight title! Home, News, Uncategorized On 15-12-2012 Rheinstetten, Germany: Alexander Petkovic succesfully defended his title with a TKO2 over Adnan Buharalija! December 19, 2012/by admin https://globalboxingunion.com/wp-content/uploads/2012/12/petkovic2.jpg 403 403 admin https://globalboxingunion.com/wp-content/uploads/2017/04/logo.png admin2012-12-19 07:31:122015-09-23 11:56:02Alexander Petkovic succesfully defends GBU heavyweight title!