Manny Pacquiao vs. Juan Manuel Márquez III, billed as The 25th Round Begins, was a boxing championship bout for the WBO welterweight title. The bout took place on November 12, 2011, at the MGM Grand in Las Vegas, Nevada and was distributed by HBO PPV. The fight also marked a return to HBO for Pacquiao and drew 1.4 million pay-per-view buys.