Sydney McLaughlin-Levrone eyes Marita Koch's 400-meter world record

The Olympic and World 400-meter hurdles champion, who opens her season on Friday in Paris, has set her sights on Marita Koch’s 38-year-old 400 sprint mark.

McLaughlin-Levrone dominates in 400m win

McLaughlin-Levrone dominates in US championships 400m win, Richardson shines again

Greatest World Championships moments – top 10, SERIES

McLaughlin-Levrone and Mu have much in common

Sydney McLaughlin-Levrone posts world-leading 48.74 to win 400m at US championships

McLaughlin dominates in US championships 400m win, Richardson shines again - Sportstar

Sydney McLaughlin-Levrone: The race for Marita Koch's 400m world record

Sydney McLaughlin-Levrone posts world-leading 48.74 to win 400m at US championships

Greatest World Championships moments – top 10, SERIES