Gretchen Walsh breaks world record in 100m butterfly; Leon Marchand wins again in MiamiGretchen Walsh, winner of three world titles in Singapore last year, is now more than a second faster than the second-fastest woman in the history in the event. Gretchen Walsh, winner of three world titles in Singapore last year, is now more than a second faster than the second-fastest woman in the history in the event. #world_record #Marchand_wins #Leon_Marchand #Gretchen_Walsh #second-fastest_woman #world_titles #Walsh_breaks #MiamiGretchen_Walsh #breaks_world #Walsh
