Michael Johnson breaks WORLD RECORD and solidifies legacy in men's 400m at 1999 Worlds | NBC Sports

American star Michael Johnson wins his fourth consecutive world title in the men's 400m with a new world record time of 43.18 seconds at the 1999 World Championships in Seville. #NBCSports #MichaelJohnson #TrackandField » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: https://peacocktv.smart.link/v82e9dl56 NBC Sports Group serves sports fans 24/7 with pre...