That sport is forever evolving and new fighters are entering the ring and trying new moves all the time. The styles that worked a year ago might not work today. Sometimes its good to take time off and try something different, good thing he is still involved in the sport.
The fighter that is most impressive to me is George Foreman. Yes i know he is a boxer
![Smile :) :)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png)
but he did re-invent himself several times and won many more titles.