Photo: World Boxing Super Series Confident Holzken: Fans should expect the unexpected on Saturday! Callum Smith (23-0. 17 KOs) and Nieky Holzken (13-0, 10 KOs) faced off for the first time at a media workout before their Trophy Semi-Final on Saturday at the Arena Nürnberger Versicherung. “I am stepping up to meet one of the … More Confident Holzken: Fans should expect the Unexpected on Saturday!