[ИATAS]

For the most part, fighters typically stay the same throughout their careers. They can change trainers all they want but it seems most of the time they resort back to what they've always been. Sure there are plenty of guys who fine tune and improve their game, but rarely do you see a guy who completely changes his style in their career (a brawler becoming a great boxer, etc.).

What are some examples of fighters who changed their style and were successful at it?