Regan Smith posts personal best in STUNNING 400m individual medley at Westmont | NBC Sports

Regan Smith dug deep to record her lifetime best time in the women's 400m individual medley, finishing with a 4:35.79 time at the TYR Pro Swim Series in Westmont, Illinois. #nbcsports #swimming #regansmith » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: https://peacocktv.smart.link/v82e9dl56 NBC Sports Group serves sports fans 24/7 with premier live even...