The most underrated career in history for this GOAT contender:
In his career Dan Henderson has 9 wins over UFC world champions, 6 wins over Pride world champions, 3 wins over Strikeforce world champions, as well as wins against other champions from Bellator, Rings, Pancrase, WSOF, and other major promotions
Dan himself was a 2 weight class Pride World champion as well as Pride world Grand Prix winner
UFC tournament champion
Strikeforce Light Heavyweight champion
Rings Openweight Champion (rings was a major promotion in early MMA that decided their champions via tournaments)
He held some form of championship in ever promotion he ever fought for.
Wins including some of the all time greats of multiple weight classes Including:
Antonio Rodrigo Nogueira
Mauricio “Shogun” Rua twice
Murilo Bustamante twice
Renato “Babalu” Sobral twice
Rafael “Feijao” Cavalcante
Murilo “Ninja” Rua
He’s also the first ever “champ champ” of a major organization.
He’s also one of very few men to win both UFC and Pride tournaments. He won a total of 4 MMA tournaments in his career.
He was a world class fighter all the way from his UFC tournament win in 1997, until his final fight almost 20 years later in 2016, a controversial decision loss in a title fight against Bisping, who he hurt on multiple occasions and nearly finished.
And he did it all while being undersized against most opponents.