This isn't exactly something you see everyday. Though it is Croatian Youth Boxing.
Check out what happened at the end of this boxing match at the European Youth Boxing Championship in Zagreb.
Vido Loncar and Algirdas Baniulis were going at it and Baniulis got the win. After the ref declares the winner, Loncar, who was in his corner walks over to the ref and drops him with a punch and then gets on top of him wildly swinging away.
Thankfully the ref was helped to his feet and appears to be alright. As for Loncar, we are guessing his days as a boxer may be numbered.