Watch Pacquiao-Marquez III live on Yahoo! Sports

The third edition of the Manny Pacquiao-Juan Manuel Marquez trilogy goes down Saturday night at the MGM Grand Arena in Las Vegas.

They met in 2004 as featherweights and, despite scoring three first-round knockdowns, Pacquiao could not hang on to win, as Marquez battled back and made it a draw. The rematch in 2008 was contested one weight class higher, and Pacquiao again knocked Marquez down. That time, he pulled out a split-decision victory.

Now they face off in a welterweight title fight that can be seen on Yahoo! Sports.

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Watch the fight live

The video coverage begins at 9 p.m. ET on Saturday. Click here to get access to the pay-per-view presentation so you can watch the fight live.

In the meantime, take a look at Pacquiao’s training in the latest Elite Athlete Workouts.

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Updated Wednesday, Nov 2, 2011