The rivalry between Manny Pacquiao and Juan Manuel Marquez may sound like old news, but the manner in which Part IV is being presented is in a league of its own.
Their third fight, which took place last November, saw their weigh-in air live on HBO, a first for the network at the time. That same pattern will hold true for this Fridayís trip to the scales, only its coverage will expand far beyond HBO.
Itís only fitting, since the promotion for this event continues to break new ground at every turn well before the fighters step into the ring Saturday night at the MGM Grand in Las Vegas.
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