Ken Shamrock
Former King of Pancrase and UFC Superfight champion Ken Shamrock is another legend who has fought on for too long. Currently 28-17-2, Shamrock has been competing since 1993. Notable wins include Maurice Smith, Bas Rutten and Matt Hume.
He last fought and lost by TKO against Royce Gracie in February 2016, later failing a drug test for steroids. He is aged 52.
