Alexander Povernov his main opponent was Stefan Kber, in 2004 he lost in the first round against Kubrat Pulev
Alexander Povernov (born 17 February 1978) is a German amateur boxer best known to win Bronze at the 2005 World Amateur Boxing Championships at Heavyweights with 201 lb/91 kg limit. One of his main opponents was Stefan Kober, brother of Sebastian Kober, who beat him on points in 2003 but whom he KOd 2004. At the European Championships 2004 he lost in the first round against Kubrat Pulev. 
