Unbeaten Rodriguez knocks out Estrada to win super flyweight belt

The 24-year-old US southpaw Rodriguez, knocked down by Estrada for the first time in round six, answered late in the seventh with a devastating left to the body that crumpled Estrada and left him writhing on the canvas before referee Chris Flores counted him out. "I got him with a good body shot," Rodriguez said. "I saw the way he was rolling on the floor. I knew that was it." Rodriguez improved to 20-0 with his 13th knockout victory while Estrada, 34, fell to 44-4 with the loss at Phoenix, Arizona.