Article updated: 12/9/2012 12:35 AM

Marquez knocks Pacquiao out cold in 6th

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Referee Kenny Bayless, center, sends Juan Manuel Marquez, from Mexico, right, to his corner after he knocked out Manny Pacquiao, from the Philippines, left in the sixth round of their WBO world welterweight fight Saturday, Dec. 8, 2012, in Las Vegas. (AP Photo/Eric Jamison)

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Juan Manuel Marquez, right, knocks out Manny Pacquiao in the sixth round of their WBO world welterweight fight Saturday.

Associated Press

Manny Pacquiao, from the Philippines, lies on the canvas as referee Kenny Bayless kneels nearby after being knocked out by Juan Manuel Marquez, from Mexico, in the sixth round.

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Referee Kenny Bayless, left, calls the fight as Juan Manuel Marquez, from Mexico, right, celebrates after he knocked out Manny Pacquiao, from the Philippines.

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Referee Kenny Bayless calls the fight as he kneels over Manny Pacquiao after he was knocked out by Juan Manuel Marquez.

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Juan Manuel Marquez celebrates his sixth-round knockout victory over Manny Pacquiao.

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Juan Manuel Marquez, left, and Manny Pacquiao trade blows.

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Juan Manuel Marquez, left, knocks down Manny Pacquiao in the third round.

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About this Article

Juan Manuel Marquez knocked Manny Pacquiao out cold with a vicious right hand at the end of the sixth round, putting a ferocious end to the fourth fight between the two boxers. Pacquiao had been down in the third round but knocked Marquez down in the fifth before Marquez threw a right hand that flattened Pacquiao face down at 2:59 of the sixth.