In MMA, there is always the threat of a submission. If somebody gets your back, you can expect them to be looking for a rear naked choke.
But if you're standing on your feet, are you expecting kicks and punches, or would you expect the guy to fly at you and slap on a triangle choke?
For some submissions to work, the conditions just need to be perfect, to execute these difficult submissions, it is almost as if the stars need to align.
Here are 10 of the most difficult submissions to execute.
Every slideshow needs a little Brittney.