World U20 leader Anthony Schwartz won the 100m in 10.23 on Friday (15) to highlight the opening day of the USA Junior Championships in Bloomington, Indiana.
Schwartz, running into a headwind of -0.8m/s, affirmed that the time of 10.09 (0.9m/s) he ran a week ago in Albuquerque, New Mexico, was no anomaly.
Eric Harrison was second in 10.26 and Khance Meyers third in 10.34. Marcellus Moore, a 15-year-old who has run 10.31, was sixth in 10.52.
The top two in each event automatically qualify for next month&rsquo;s IAAF World U20 Championships Tampere 2018, provided they have achieved the qualifying standard.
In the women&rsquo;s 100m, Twanisha Terry was an emphatic winner in 11.24 (-1.1m/s). Daija Lampkin was second in 11.34 and 2015 world U18 bronze medallist Jayla Kirkland third in 11.37.
Six days earlier, Terry finished third at the NCAA Championships in Eugene, Oregon. She is the U20 world leader with her 10.99 clocking from 21 April. 
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Twanisha Terry wins the 100m at the US Junior Championships</div>
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Just 48 minutes after advancing to the 400m hurdles final, Cory Poole won the 110m hurdles in 13.38. Joseph Anderson claimed the other spot on Team USA in 13.58. Poole, who is the fastest US U20 athlete this year in the 400m hurdles, goes for a hurdles sweep on Saturday after running 51.30 in his semifinal.
JuVaughn Blake also completed the first half of a potential double. Blake, who is second on this year&rsquo;s world U20 high jump list, won the long jump with 7.68m. He will aim to win another gold medal in the high jump on Sunday.
In the pole vault, Zachery Bradford jumped 5.55m, which puts him fourth on this year&rsquo;s world U20 list. He and Cole Riddle (5.50m) kept KC Lightfoot off the national team. A month ago, Lightfoot vaulted 5.61m, second only to world U20 record-holder Mondo Duplantis on the 2018 world U20 list. Lightfoot was third with 5.45m.
Twins Michael and Steven Feldman finished first and second in the men&rsquo;s hammer at 68.03m and 65.99m respectively. They are coached by their father, Roman, a former hammer thrower in his native Ukraine.
Roy Jordan for the IAAF

World U20 leader Anthony Schwartz won the 100m in 10.23 on Friday (15) to highlight the opening day of the USA Junior Championships in Bloomington, Indiana.

Schwartz and Terry take 100m titles at US Junior Championships