LAS VEGAS -- Manny Pacquiao's rematch victory over Juan Manuel Marquez was worth every minute of the four-year wait. Pacquiao won a narrow split decision to claim Marquez's WBC 130-pound title Saturday night in a sensational fight that left two of the world's best boxers bloody and triumphant. Though Marquez landed more punches at a higher percentage, Pacquiao (46-3-2) knocked down Marquez (48-4-1) in the third round and persevered through a nasty cut. Marquez also was cut in the fight, but neither backed down from one scintillating exchange after another. Their first matchup ended in a draw in May 2004....