Winning a fight inside of the Octagon is pretty darn hard.
Just ask WWE Superstar CM Punk.
It takes years and years of honing your craft and sharpening your skills to be ready for an MMA professional contest, and even then there's no guarantee that you'll have your hand raised at the end of the night.
So, if winning just one single solitary bout is this difficult, think how hard it must be to win twice in a row. Or three times. Or four. Or... you see where I'm going with this.
Yet, despite taking part in one of the most unpredictable and competitive sports on planet earth, this uber talented bunch have all managed to amass a significant winning streak inside of the cage.
Some of these active talents are still in the early stages of their UFC careers and could realistically add to their victorious runs for years to come. However, some of these fighters are now reaching the end of their roads and will want to retire on a winning high at the top of the mountain.
Regardless of whether they're at the beginning or the closing stages of their UFC tenure, these 10 dominant arse whoopers have all seemingly forgotten what it feels like to lose.