Kaylee McKeown, Regan Smith BATTLE for 200m backstroke world record at World Cup | NBC Sports

Kaylee McKeown emerged victorious and with the new women's 200m backstroke world record after a thrilling battle with former record-holder Regan Smith in the Swimming World Cup at Westmont. #NBCSports #Swimming #KayleeMcKeown #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...