FRISCO, Texas (AP) — Errol Spence Jr. stopped Carlos Ocampo in the first round Saturday night to retain the IBF welterweight crown. Fighttng in front of a home crowd at the Dallas Cowboys' practice facility, Spence improved to 24-0 with his 11th straight knockout and 21st overall. Ocampo crumpled to the canvas after a right hand to the body just as the first round was ending.