Freddie Pendleton was the best one I could think of, good call ICB. He didn't just get off to a poor start then find his winning ways, he lost a lot of fights all the way through but had a lot of tools. Bit like an Emmanuel Augustus I'd say, only clearly better and was consistently very good during his peak, win or lose. Had some fun fights to watch. I don't know offhand how many fights Baldomir lost before he upset Judah, but he's about as unlikely a champion as you can find; although really he just cashed in on Judah being a basketcase and wasn't very good.