Fairfax, Virginia - Super lightweight sensation Mario Barrios (24-0, 15 KOs) scored a devastating second round knockout victory over Juan Jose Velasco (20-2, 12 KOs) in the co-feature.

Barrios of San Antonio, Texas kept his undefeated record intact when he landed a crushing body shot that sent Velasco to the canvas midway through the second round.

Referee Hugo Spinola counted out Velasco at 1:16 of the second round as the Argentine was on his hands and knees trying to catch his breath.

Barrios said he was trying to be patient and use his jab to set up the perfect shot.

"I saw him opening up every time he would step in. I knew one of the body shots was going to do it and I found the sweet spot,’’ Barrios said. "We weren't expecting it to end that quickly. I wasn't predicting a knock out, but I knew I had the power to do it and stop him."

"I was very confident. I had a great camp. I can't thank Virgil Hunter and the team for the preparation for this fight. We knew he was vulnerable with body punches and that was something I work on regardless. It is one of my favorite shots. I have been working on it since the amateurs.”

Barrios said he would build on the victory over Velasco and continue to climb the ladder at 140 pounds.

"I want a world title shot. I am always in the gym. I am always ready. I want all the smoke at 140. I want any of the champions. And I’m ready to bring a big fight to all my hometown fans in San Antonio.’’