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, saying, "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 Chael Sonnen in the UFC for much longer.