Timothy Bradley Jr.

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Manny Pacquiao is not perfect. He's not unbeatable. He's not impossible to root against. Imagine that. In the last seven months, nothing has quantitatively changed for Pacquiao, who is still on a winning streak and still one of the most insanely famous people in the world. And yet it feels like things are on the precipice of changing. There's no need to trot out the "oh, how the mighty have fallen" cliché for him just yet. But there's something vaguely in flux about the Filipino living legend's aura, and the idea of the mighty falling is suddenly conceivable.

Eight-division world champion Manny Pacquiao is taking on undefeated champion Timothy Bradley Jr. to avenge one of the most controversial decisions in boxing history.

Manny Pacquiao takes the ring, perhaps for the very last time, against Timothy Bradley on Sunday.

Timothy Bradley vs. Juan Manuel Márquez, is a boxing welterweight championship fight. The bout was held on October 12, 2013, at the Thomas & Mack Center in Las Vegas, Nevada, United States on HBO Pay-Per-View.

Way back in 2004 Filipino Pacquiao knocked Márquez down three times in the first round, but the battle went the distance, the pair couldn't be separated by the judges and a draw was declared. In 2008 the pair fought again, and that time Márquez lost his WBC super-featherweight title to Pacquiao in a controversial split decision. "Now it's time to shed doubt over who the best fighter is," the Mexican said in the run up to tonight's 12-round bout at the MGM Grand Garden Arena. "I want to win this fight because I believe I won the first two." When the fight was promoted in Pacquiao's homeland, Márquez gave his opponent added motivation by wearing a T-shirt bearing the legend: "We Were Robbed."