HISTORIC race for Gretchen Walsh 🥇

Team USA's Gretchen Walsh dominated the women's 100m butterfly final at World Aquatics Championships in Singapore, setting a championship record with the second-fastest time in history behind only her own world record in the event. #NBCSports #GretchenWalsh #Swimming » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on Peacock: https://peacocktv.smart.link/v82e9dl56 N...