On Saturday night, Chael Sonnen made two things clear.
He doesn't like Anderson Silva, and this time, he's playing for keeps.
After defeating Brian Stann via second round submission, Sonnen had one of the biggest post fight interviews in UFC history, when he laid down a challenge to Anderson Silva.
"Anderson Silva, you absolutely suck. I'm calling you out Silva, but we're upping the stakes. I beat you, you leave the division. You beat me, I'll leave the UFC forever."
That is a huge challenge, and here's five reasons why we won't be seeing Anderson Silva at middleweight for much longer.