Most of us have watched a professional fight. When I was growing up it was old school boxing and later it became mixed martial arts (MMA). The latest fight between the old school of Floyd Mayweather  and new school Conor MrGregor. Everyone wanted to know which was better. Because they weren't in the same weight class we may never really know which is better. Old school boxing or all the fancy crazy technical holds, escapes and reverses of the new school…