From the legends who defined MMA to the titans still shaping its future, these 25 fighters are the very best to ever step ...

All the latest breaking news on Floyd Mayweather. Browse ibtimes archives of photos, videos and articles on Floyd Mayweather.

All the latest breaking news on Ultimate Fighting Championship. Browse ibtimes archives of photos, videos and articles on Ultimate Fighting Championship.

Khabib Nurmagomedov, retired and undefeated with a 29-0 record, was the longest reigning UFC lightweight champion. He now ...