He won Olympic Bronze in 2000 at Super Heavyweight after beating Calvin Brock and Samuel Peter but lost to Audley Harrison.

Vidoz kept up a solid winning streak before encountering Zuri Lawrence, a "journeyman" fighter who, while proficient in his defensive ability, lacks a modicum of talent with regard to hitting his opponents (he has failed to record even a single knockout throughout his 12 years in the ring).

Vidoz dropped out of serious contention with a ninth-round TKO loss to Russian boxer Nicolay Valuev on 9 October 2004 at the Messehalle in Erfurt, Germany.

He faced Sinan Samil Sam for the vacant EBU (European) heavyweight title on 4 July 2008, but lost by majority decision.

His most recent fight was on December 16, 2011, where he lost a decision to undefeated Matteo Modugno and has retired after deciding to hang up the gloves following the loss.