Welcome to Boxing Extra — this video features some of the most brutal first-round heavyweight knockouts in boxing. From legendary punchers to rising heavyweight stars, these fighters wasted no time delivering explosive finishes inside the ring. Featuring fighters like Mike Tyson, Tommy Morrison, Shannon Briggs, Butterbean, Andy Ruiz Jr., Richard Torrez Jr., Jared Anderson, Moses Itauma, and Bakhodir Jalolov. Let us know which knockout was the most brutal, and don’t forget to subscribe for more boxing highlights every day on Boxing Extra. #miketyson #tommymorrison #boxing #knockouts #firstround #ko #boxinghighlights #brutal #fighter #BoxingExtra Footage rights provided by WSC Sports - https://tinyurl.com/BoxingExtra