Gretchen Walsh REPEATS her women's 100m butterfly win at Swimming World Cup | NBC Sports

Gretchen Walsh won again in the women's 100m butterfly competition at the World Aquatics Swimming World Cup. #NBCSports #Swimming #GretchenWalsh » 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 events, insightful studio shows, and compelling original programm...