Regan Smith, Kate Douglass, Gretchen Walsh and Torri Huske's time of 3:49.34 eclipsed the previous mark of 3:49.63 set by the U.S. team at the Paris Olympics last year.
Regan Smith, Kate Douglass, Gretchen Walsh and Torri Huske's time of 3:49.34 eclipsed the previous mark of 3:49.63 set by the U.S. team at the Paris Olympics last year.
