Richard Torrez Jr. viciously knocked out Marco Antonio Canedo in the first round Saturday night.

The hard-hitting heavyweight prospect pulverized Canedo with a left-left-right combination that left him unconscious, flat on his face, just 43 seconds into their scheduled six-rounder in Tulsa, Oklahoma. Torrez dropped Canedo twice in their very brief bout and left the Mexican boxer in need of medical attention.

Referee Gary Ritter officially stopped the action 44 seconds into the opening round.

ESPN televised Torrez’s impressive victory as part of the Jose Pedraza-Richard Commey undercard from Hard Rock Hotel & Casino.

The 23-year-old Torrez, of Tulare, California, won a silver medal while fighting for the United States at the Summer Olympics in Tokyo a year ago.

He fought for the second time in just six weeks because his previous bout lasted only 58 seconds. Torrez knocked out Roberto Zavala Jr. (2-2-1, 2 KOs) in the first round of that bout July 15 at Pechanga Resort Casino in Temecula, California.

Prior to the brutal conclusion of their fight, a straight left hand by Torrez sent Canedo into a squatting position just 21 seconds into their fight. Though stunned, Canedo got up and tried to fend off the better, faster, stronger Torrez.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.