Well that's one way to lose a fight.
Here's the top 20 knockouts in UFC history.
They each land a perfect punch at the same time.
Instead of boxing like normal kangaroos this one goes MMA style and puts on the sleeper hold.
The effects of getting hit in the head one too many times...
Referee Lee Ambler Steps In to the ring to help calm a situation during a bout at W.C.F.C's Medway Meltdown.
That's a good way to get fired.
Check out what happens to this boxers face when he takes a punch to the head.
Goodnight, sweet dreams...