Mollie O'Callaghan MOTORS to 200m freestyle world record at Swim World Cup at Westmont | NBC Sports

Australia's Mollie O'Callaghan became the first woman to swim a sub-1:50 200m freestyle, setting the world record at the Swimming World Cup in Westmont. #NBCSports #Swimming #KateDouglass » 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 stu...