Ethan Miller/Getty Images
During Jackson's run in Pride, the man to beat was Wanderlei Silva.
Silva was the most brutal fighter in the company and was its middleweight champion at the time.
If there was ever a fighter that could stop Silva, many thought it was Jackson.
The two men first met November 9th 2003 in the final of Pride's middleweight grand prix.
During the fight Jackson took down Silva and caused him to bleed. After the ref stood the fight up, though, Silva took advantage and gave Jackson his first career knockout loss by knees.
In their second fight nearly a year later, Jackson started off getting the upper hand on Silva.
Jackson floored Silva and scored some takedowns in the first and second rounds.
But Silva was able to take advantage once the fight got back on its feet and ended the fight once again by devastating knees to Jackson's head.
Jackson would have the last laugh when they met for a third and final time at UFC 92. After testing each other out, Jackson scored a knockout victory with a left hook.
The Jackson-Silva rivalry is known as one of the greatest in MMA history thanks to each one ending in a brutal knockout.