Errol Spence Jr. vs Carlos Ocampo - Full Fight (Highlights)

IBF welterweight champion Errol Spence Jr.'s catchphrase came early on Saturday as he needed less than a single round to knock out mandatory opponent Carlos Ocampo in front of a sellout crowd of 12,604 fans at the Ford Center at The Star in Frisco, Texas.

The fight, which took place at the practice facility of the Dallas Cowboys, served as a homecoming for Spence (24-0, 21 KOs), a native of Desoto who currently ranks among the top pound-for-pound fighters in the sport.

Spence, 28, who wore the blue star emblem of the Cowboys on his shorts, made even quicker work of the unheralded Ocampo (22-1, 13 KOs) than was expected in this gross mismatch. The 22-year-old Ocampo, who had never fought outside of his native Mexico and lacked a significant victory of any kind, succumbed to a body shot with just 10 seconds remaining in the opening round.

Ocampo stayed down on his knees in pain as referee Laurence Cole counted him out.