MMA is a tough, tough sport. When it goes bad, it has the potential to go very bad. Such is the case of Timothy Kelley Jr., who talked about his devastating knockout — and broken jaw — on the popular UG forum.

Fought at Turfway Park last night. Got caught with a head kick, was out for 3:42 seconds. My jaw is broken, I have surgery tomorrow. Can’t work for many weeks. This sucks mass.

Dude is a serious warrior. I have the utmost respect for him not only telling his story, but then even posting the video. I’m not sure which is worse — seeing the kick to the jaw or the sound it makes.

We salute you, Timothy Kelley Jr., and we wish you a speedy and full recover. Also, if you don’t mind, can you send us any leftover pain meds?

Maurice Smith started in the MMA game a looooong time ago, when most of you whipper snappers were still poopin’ in your drawers.

He decided to come out of retirement at age 50, yes FIVE-OH, and took a fight with Resurrection Fighting Alliance.

Smith took on Jorge “The Mighty” Cordoba — a fighter nearly half his age — and then this happened.

Rewind the fight and watch the dominance from the beginning. Also, how about that insane head kick in gif form:

Mo says he wants to keep on fighting. Can you blame him?

Oh, the humanity. Or lack of it. Folks, what you are about to see is a bit of dirty pool.

Cage Warriors is featuring a 125lb. ladies tournament, and it didn’t get off to the best of starts. Sure, it was exciting, but it was also a filthy way to win a fight. This is Shiela Gaff vs. Jennifer Maia in Dubai. Watch what happens after the ‘tap’ of the gloves to start the fight.

That’s weak sauce. She barely glances the glove and then unleashes a barrage of punches, one of which knocks Maia out. Just garbage. Fighting dirty is the antithesis of martial arts. You want to do crap like that go get in a street fight.

Bellator is not only known for their beautiful ring girls that like to tweet out hot pics. They’re also known for spectacular finishes, and this Friday was no different. Brian Rogers stuns Vitor Vianna with a right hand, then finishes the wreckage with a flying knee that puts Vianna flat on his back and possibly in another dimension.

Apparently this guy thinks he is the next Jon Jones, entering the cage with Bones’ patented ‘spider crawl’.

But apparently his opponent thinks they are fighting with Vale Tudo or Pride rules. Nope, this will not end well. But it will end quickly, with the epitome of a ‘sickening thud’.

Check out this crazy knockout in women’s MMA, from a promotion called ‘Brace For War’ in Australia. Crikey, mate — you’re not gonna believe what happened! This is Bec Hyatt vs. Rhiannon Thompson.

I think it’s great how the chick that delivered the knockout kick was a bit stunned that she won. It was almost like it took some time to register that she actually KO’d the other fighter.

‘Brace For War’ bills itself as ‘Australia’s most exciting mixed martial arts event’. I dig it.

There are plenty of Americans that don’t consider Capoeira a martial art. They look at it as more of a dance form, or something akin to Yoga. This will change their minds. Just because something is beautiful doesn’t mean in can’t cause pain. Here, Cairo Rocha lands a ‘Gancho Giratoria’ on Francisco Neves at the Brazilian Fighting Championships last Friday.

Cris Cyborg goes all Cyborg to retain her Strikeforce title. It’s starting to sound like a broken record, but it’s no less exciting to watch. Here she runs through Hiroko Yamanaka in just :16 to defend her title. She’s running out opponents — unless she agrees to take on MMA’s newest hottie, Ronda Rousey.

Chan Sung Jung is better known to fight fans as ‘The Korean Zombie’. He got the nickname for his ability to withstand insane amounts of punishment while continuing to keep coming forward at his opponent.

Saturday night at UFC 140, he did not need to enter Zombie-mode at all. There was no back and forth between the two fighters. There was a tap of the gloves to start the fight, a swing and a miss by Mark Hominick and this blast by the Zombie that ended it all — in just :07.

Could the Korean Zombie be in line for a title fight? Hominick was the last man to fight Jose Aldo for the belt, and Zombie just finished him in :07. Bring it!

Strikeforce: Henderson vs Babalu

If you missed all the action of Strikeforce: Henderson vs Babalu on Saturday December 4th, then here are the best parts of the four main fights from the main card: the KO’s. Check out the video below to see Silva’s, Lawler’s, Daley‘s KO of the night, and Henderson‘s KO of Sobral.