Marileidy Paulino BARELY survives, onto 400m final after backing off early in semis | NBC Sports

Defending World and Olympic Champion Marileidy Paulino nearly miscalculated how early she eased up in the 400m semis in Tokyo, holding onto an automatic qualifying spot by just .05 seconds to advance to Thursday's final #NBCSports #MarileidyPaulino #trackandfield » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: https://peacocktv.smart.link/v82e9dl56 NBC S...