Manny Pacquiao of the Philippines defeated David Diaz of Mexico with a knockout in the ninth round to claim the WBC lightweight title Saturday night at Mandalay Bay in Las Vegas. (Jae C. Hong / Associated Press)
Manny Pacquiao lands an overhand right to David Diaz during the second round of their WBC lightweight championship bout Saturday night. Pacquiao would take the title from Diaz with a knockout in the ninth round. (Jae C. Hong / Associated Press)
Manny Pacquiao sends David Diaz reeling with a left cross in the fifth round of their bout Saturday night. (Jae C. Hong / Associated Press)
David Diaz, looking worse for the wear, trades punches with Manny Pacquiao during the fifth round of their fight Saturday night. (Eric Jamison / Associated Press)
A battered David Diaz didn’t back down from eventual winner Manny Pacquiao during their WBC lightweight title fight Saturday night in Las Vegas. (Isaac Brekken / Associated Press)
David Diaz is down for the count after a barrage by Manny Pacquiao in the ninth round. (Harry How / Getty Images)
Manny Pacquiao of the Philippines begins to celebrate after knocking out David Diaz of Mexico in the ninth round Saturday night to claim the WBC lightweight championship. (Jae C. Hong / Associated Press)
Manny Pacquiao celebrates winning his fourth title -- each in a different weight class -- after knocking out David Diaz of Mexico in the ninth round Saturday night. (Harry How / Getty Images)
