At UFC 40, Ken Shamrock fought Tito Ortiz for the UFC Light Heavyweight Championship in one of the biggest and most hyped MMA fights of all time. Ortiz defeated Shamrock by corner stoppage after the third round ended. After the fight was over, Shamrock raised Ortiz's hand and embraced him, seemingly putting an end to the rivalry. However, Shamrock fought Ortiz with a torn ACL (a severe knee injury), and when Shamrock made light of his injury, Ortiz took it as Shamrock making excuses for the loss and they began feuding again. The rivalry did not end until 2006 at Ortiz vs Shamrock 3 - The Final Chapter, where Ortiz defeated a 42-year-old Shamrock by KO due to strikes.