In September 1999, Shamrock defended the UFC Middleweight Championship against future UFC Light Heavyweight Champion Tito Ortiz at "UFC 22". Ortiz had exploded as a star after his confrontation with Shamrock's brother Ken and his Lion's Den camp at UFC 19. The bout was hyped as a grudge, as Shamrock was a former Lion's Den member who, according to the marketing, was out for revenge against Ortiz. However, this was not necessarily the case because Shamrock had left the Lion's Den on bad terms a year and a half earlier. Despite dominating his opponents in his previous title defenses, Shamrock was considered to be an underdog in this fight; Ortiz had come off convincing wins over Shamrock's former teammates Jerry Bohlander and Guy Mezger and popular opinion was that Ortiz was too big and strong for him to deal with (Ortiz cut weight to fight and by the time he stepped into the cage he would have on Shamrock).