Wow, this is easier than I thought.
Anyone rememeber this guy? Yes, the fat dude from UFC 1. Not Teila Tuli.
Kevin Rosier > Zane Fraiser > Takayuki Okada > Jason Lambert > Babalu > Chael Sonnen > Paulo Filho > Ryo chonan > Anderson Silva
I'm sorry but you all wrong. Kevin Rosier is the GOAT. Did it in 9 moves!