Manny Pacquiao avenged his loss to Erik Morales on Jan. 21, 2006, when he stopped the Mexican champion with a technical knockout in the 10th round at the Thomas and Mack Center in Las Vegas to claim the WBC super-featherweight title. He would beat Morales in a third meeting with a third-round knockout on Nov. 18, 2006. (Jed Jacobsohn / Getty Images)