Matt Serra would likely be selling baseball cards on QVC.
Stephan Bonnar would continue touring with the Breeders.
BJ Penn would be an unmotivated dolphin handler.
Nick Ring would be a police man, or cowboy, or indian chief, but likely a construction worker, he could also work in the Navy or at the YMCA.
Frank Mir would likely carry Brock Lesnar's luggage.
Jon Fitch would develop new and exciting sleeping aids
Josh Koscheck middle school gym teacher, and still a tool
Wanderlei Silva would finally get his phd in astrophysics...nah just kidding formal doorman
Dominic Cruz would still be living with Herman and Lily Munsters basement.
Team Alpha Male would become the worlds tiniest strippers/curling team.
Diaz Brothers would likely get back to their first love poetry or teach elocution lessons to foreigners.