Sydney Michelle McLaughlin-Levrone is an American hurdler and sprinter who competes in the 400 meters hurdles. She is the 2020 Tokyo Olympic champion with the Games record, and 2022 World champion with a world record time of 50.68 seconds. Setting four world records during 13 months, she was the first woman to break the 52-second and 51-second barriers in the 400 m hurdles. She won the silver medal at the 2019 World Championships. At all three competitions, she also took gold as part of a women's 4 × 400 m relay team.

The 2015 World Youth Championships in Athletics was the ninth edition of the biennial international athletics competition for youth (under-18) athletes. The five-day competition took place between 15 and 19 July at the Estadio Olímpico Pascual Guerrero stadium in Cali, Colombia. Eligible athletes were aged 16 or 17 on 31 December 2015.