Rickson fought between 1980 - 2000. The Gracie’s certainly considered him the best among them. Legends about him abound. No doubt, he was a badass. But who was fighting between 1980-1997 (we’ll call those his prime years) that Rickson did not fight that you believe either absolutely would have beaten him or probably would have or possibly could have. Personally I think: Coleman absolutely beats him. Frank Shamrock, Tito Ortiz probably would have beaten him. Sakuraba, Dan Henderson, Igor V., Don Frye, Oleg T. all could have beaten him.