U.S. remains perfect in men’s 4x100m medley relay
![U.S. remains perfect in men's 4x100m medley relay](https://ktvz.b-cdn.net/2021/08/oly20_xx_2558_newsdeskapple_ce_21080-1440x810.jpg)
NBC Olympics
The final night of swimming ended with a surprise and some consistency, while track gets started with Elaine Thompson-Herah’s new Olympic record in 100m and Simone Biles announces she won’t compete in the floor exercise.