By Ryan Burton

Unbeaten Terence Crawford punched his way to a lopsided 12-round unanimous decision over Viktor Postol Saturday to unify the World Boxing Organization and World Boxing Council super lightweight world titles.

Crawford, who improved to 29-0 with 20 knockouts, dropped Postol twice in the fifth round to seize control of the bout at the MGM Grand Garden Arena in Las Vegas, with two judges scoring it 118-107 for the American and the third seeing it 117-108.

In handing Postol his first defeat in 29 fights, Crawford not only added the Ukrainian's WBC belt to his own WBO title, he put himself in line for a potential date with Manny Pacquiao in the Filipino's return to the ring likely later this year in Las Vegas.

Crawford, 28, was content to feel Postol out over the first three rounds, before landing a series of damaging lefts in the fourth.

He had Postol's knee on the canvas in the opening seconds of the fifth with a right hook, and sent him down again in the same round with another left.

As Postol struggled to deal with Crawford's quick, erratic movement, the American won round after round, staggering Postol again in the ninth.

Postol tried to pour it on in the 12th, but Crawford didn't yield.

Crawford's trainer, Brian McIntyre, sent a parting show to Postol's trainer Freddie Roach.