Heath Herring
Emelianenko was then signed to fight heavily favored Antônio Rodrigo Nogueira for Pride's Heavyweight Championship title at Pride 25 on 16 March 2003. Nogueira was coming off wins against Mark Coleman, Heath Herring and an upset comeback victory against Bob Sapp, as well as victory in the RINGS 2000 King of Kings Tournament, in which Emelianenko had participated. Nogueira was considered by many fans to be virtually unbeatable, due to his endurance and submission skills. Emelianenko rocked him early with punches and Nogueira pulled guard. Emelianenko survived Nogueira's guard, considered the most dangerous in MMA and easily defended all of Nogueira's submission attempts, dominating him for 20 minutes with a brutal ground and pound. The judges rendered a unanimous decision and Emelianenko became the second Pride Heavyweight Champion, a title he would never lose.