Despite never winning a Ultimate Fighting Championship (UFC) title, he's widely considered one of the most accomplished fighters of all-time. Chalk that up to his world championships in Pride and Strikeforce, as well as capturing knockout finishes over Fedor Emelianenko, Wanderlei Silva, and Mauricio Rua.
But regardless of his defining career moments, the 45-year-old has begun his inevitable decline in the sport. After all, "Hendo" has been competing in MMA since 1997. That includes 45 fights, three knockout defeats, and countless bloody wars.
Currently scheduled to take on Cuban powerhouse Hector Lombard at UFC 199 on June 4, Henderson believes he's closer than ever to actually stepping away from the Octagon for good.