odds

I'm doing a project on overcoming odds and I wanted to feature a ufc fighter/fight. Like a fight where a fighter overcame odds of size, strength, etc. I'd appreciate the names of the fighters and a brief explanation of how odds were overcome. Thanks in advance

GSP +170 BJ Penn -140 So,who's the underdog and who's the favorite? How much do you win if you bet $100 on either man and they win?

I've got a grandmother with these, what are the odds that this would happen? I know that this is rare, but are there other people who have developed this?