6. Don Frye vs. Ken Shamrock
After several years of bad blood and extreme trash talking, Ken Shamrock and Don Frye fought for the first and only time at PRIDE 19: Bad Blood. Years before, Frye would make reference to Shamrock and his then 19-year-old girlfriend, and added several other cheap shots to get Shamrock to take the fight. By the time these two men fought, they were considered to be past their prime to be relevant in the heavyweight division, but when they stepped into the ring for the main event, they took part in one of the greatest fights in MMA history. Despite being close to defeat several times because of leg locks, Frye would not tap out and eventually earned the split decision victory.