He is a former Croatian boxer, On 8 February 2003 he became European champion with a victory over Silvio Branco, He won the WBA's version of the world light heavyweight championship title on 27 April 2007. by beating Silvio Branco for a second time...
You mean Stipe Drviš. I have no opinion on him as a boxer, but I know his name is not spelled - Stipe Drews. I don't understand how you could get so wrong, unless you misspelled the name on purpose.