Catch up on the best action from early in Day 4 of the Tokyo Olympic Games, from 17-year-old Lydia Jacoby’s gold-medal win to Naomi Osaka crashing out of the women’s tennis tournament. #NBCOlympics #Tokyo2020 #TeamUSA » Subscribe to NBC Sports:…

The women’s 100m breaststroke gold medal remains in American hands, but it was teenager Lydia Jacoby who bested defending Olympic champion Lilly King. #NBCOlympics #Tokyo2020 #Swimming » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch live Olympic coverage on NBCOlympics.com: https://www.nbcolympics.com/schedule…