USA suffer shock exit from men's 4x400m relay in heats after final-lap error - ‘Truly awful performance’

Watch as the men's USA 4x400m relay team suffered a shock exit in the heats after a huge error on the final lap. TNT Sports will broadcast 30 hours of live television coverage from the World Athletics Championships, available in addition to a daily highlights programme. Streaming subscribers will also be able to watch nearly 50 events live and on-demand via discovery+.