- St. Pierre's loss to Serra, for sure. And his loss to Hughes. He improved after each of those.
- Chuck's loss to Randy, because he worked on his footwork and angles and it served him very well.
- Tito's loss to Frank is another one, because he made conditioning a priority after that.
- Lytle's loss to Serra, because he started just going for it every time out and became one of the most exciting guys in the UFC.
- I'm not sure how much Wanderlei's loss to Tito helped him, but the dude didn't lose again for four years, and that was a controversial decision against a dude who outweighed him by like 150 pounds.
- I'm kind of with dav35 on the Mir thing. He has only fought once since Lesnar, getting the same kind of early submission he has always been famous for.
I'd say the Vera loss probably did more for him, as it was proof that the loss to Cruz wasn't a fluke and that he was going to have to work hard to become an elite heavyweight again.