Former UFC two-weight champion Daniel Cormier named his top five fighters in boxing and mixed martial arts history.
This is my list, and I'm sticking to it. The greatest of all time: 1. Floyd Mayweather; 2. Khabib Nurmagomedov; 3. Muhammad Ali; 4. Georges St. Pierre; 5. Amanda Nunez. Muhammad Ali wasn't undefeated, I can't put him any higher.
Daniel Cormier
Floyd Mayweather Jr's record currently stands at 50 wins, 0 loses and 0 draws. Of those 50 wins he has stopped 27 of his opponents, so his current knock-out ratio is 54%. He's boxed a total of 397 rounds, meaning his professional fights last 7.9 rounds on average.