That Time Sergey “Krusher” Kovalev Murdered A Man In The Ring.

http://b78b.http.cdn.softlayer.net/00B78B/thesweetscience/images/Roman-Simakov-kovalev-117.jpg

In his 2011 fight against Roman Simakov, Kovalev knocked down his opponent in the sixth round and the fight was stopped one round later and Kovalev was awarded a TKO victory. Simakov was taken to the hospital, where he lapsed into a coma and died three days later. Watch the full fight here.