I'd say the P4P timeline was Royce, Frank, BJ, GSP, Fedor, Anderson, Aldo, Jones, henry, Khabib. But there's been other really good P4P guys throughout history who don't get enough respect. Big Nog was actually considered #1 p4p for abt 4 years until Fedor beat him! Very underrated imo ppl just didn't watch then. Bas Rutten-- probably one of the most underrated fighters of all time Might Mouse---Henry always struggled to make 125...DJ made is easy and tho he did lose, it was a split decision very close fight. any other guys?