Challenging a mixed martial arts gym can be a dangerous thing. Challenging a particular fighter can be equally as hazardous. Still, these two fighters may be from the same gym. At any rate, this fight challenge ended with some serious repercussions.
In the video below, two men can be seen having it out in a local gym. However, the bout does not appear to be a friendly one. With a gym full of spectators, the two fighters went to war. Neither fighter was donning headgear, shin guards or heavy gloves.
Throwing knee strikes to the head and slamming his opponent into the ground with all his might, the victorious fighter seems to have been holding positively nothing back.
For the full fight scene and the vicious slam, see the video below.