One day up, one day down from the World U20 Championships in Lima, Peru.
For the U.S. national team, there was a minor mistake, firstly, that resulted in the reigning U-20 champions not fielding a mixed relay team due to a clerical error: USATF released a statement saying that the team members had not been properly registered in the World U-20 System.
This cost the United States a medal in the 4×400, and ultimately no Americans won a medal on the first day of competition.
But there will be some consolation on the second day, with four more finals scheduled, including the women's discus, women's long jump and the men's and women's 100 metres. The women's heptathlon also concludes on the final day.
We bring you the latest updates from the morning and afternoon sessions from the Videna Athletics Stadium in Peru.
Women's U20 400m Hurdles
The opening round was held in six heats here, and American Jasmine Robinson came in second in the first heat in 58.25 seconds, behind South Africa's Tumi Ramokogopa, and will now be competing for a spot in the opening round qualifiers.
Montverde Academy graduate and Virgin Islands U20 athlete Michelle Smith won the second section in 57.85 seconds, while American Braelyn Baker took second in the third frame in 59.31 seconds.
Smith, a rookie from Georgia, recorded the fastest time in the qualifying rounds.
Men's U20 400m Hurdles
Vance Nilsson of Arizona, the national high school record holder in the 300-meter hurdles, easily won the fourth leg in 51.98 seconds.
Fellow American hurdler Premier Wynn also qualified for the semi-finals with a time of 51.89 seconds, moving on to the next round.
Finnish athlete Antti Sainio recorded the fastest qualifying time of 51.19 seconds.
Women's U20 400m Qualifying
Zaya Akins and Micaela Mouton cruised through the first round on Wednesday with ease, posting qualifying times of 52.69 and 53.29 in the fourth and sixth frames, respectively, to advance to the next round.
Akins just finished his freshman season at the University of South Carolina, while Mouton competed in the NCAA Outdoor Championships as a freshman at the University of Houston under the tutelage of famed coach Carl Lewis.
Ella Onojuwewo of Nigeria led all athletes with a time of 52.19 seconds.
Men's U20 400m Qualifying
The top American athletes led the qualifying rounds on Wednesday.
Atlanta-Westlake rising senior Sidi Njieh clocked 46.83 seconds in the first round to advance to the semifinals, while Jayden Davis clocked 46.32 seconds in the first round to advance to the semifinals.
Davis, a freshman from Arizona State, ran faster than any player in the first round.
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