TOKYO, Sept. 19 (Xinhua) -- Dutch star Femke Bol successfully defended her women's 400 meters hurdles crown at the World Athletics Championships on Friday, clocking a world-leading 51.54 seconds.
The 25-year-old, who also won bronze medals at the last two Olympic Games, underlined her dominance in the event with the fastest time of the season.
American Jasmine Jones claimed silver in 52.08, while Slovakia's Emma Zapletalova earned bronze.














