Rizzo, Rutten and Ruas can also grapple but lose when facing better grapplers. Most fights in the ufc are not ending due to ko they are ending due to ref stoppages when a guy is throwing punches from the mount position not standing up. The UFC is known for it’s early stoppages. Pride fighting championships have more submissions because it is in a ring instead of a cage. Just because Tyson had a few streetfights against untrained fighters doesn’t mean he can grapple or win a fight against a highly trained grappler. Coleman isn’t the best anymore. He was a few years ago but MMA has evolved. The best fighter at the moment is Minotauro.