The United States mixed 4x400 relay team broke the U20 world record with a time of 3:15:31 to win the World Athletics U20 Championships. The team of Joshua Shelton, Taylor-Nicole Overton, Jaelen Hunter and Olivia Harris beat the record, set by the United States in 2022, by over two seconds. #nbcsports #TeamUSA #trackandfield #worldchampionship » Subscribe to NBC Sports: youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: peacocktv.smart.link/v82e9dl56 NBC Sports Group serves sports fans 24/7 with premier live events, insightful studio shows, and compelling original programming. NBC Sports is an established leader in the sports media landscape with an unparalleled collection of sports properties that include the Olympics, NFL, NBA, Premier League, Big Ten, NASCAR, PGA TOUR, the Kentucky Derby, Tour de France and many more. Subscribe to our channel for the latest sporting news and highlights! NBC Olympics is responsible for producing, program...