Delev came within half a second of Leah Hayes’ 10 & under NAG record in the 200 free, dropping more than two seconds in 2:14.82.
Kauspedas brought the Lithuanian Record down from 25.07 to 24.68 in the 50 back, becoming the 5th-fastest European junior in history at just 16 years of age.
At the French Elite Championships, the 19-year-old pulled away from David Aubry and Damien Joly to win the mile in 14:48.69, dropping more than 21 seconds.
Vatev put up a time of 51.21 in the 100 free to come within nine one-hundredths of Thomas Heilman’s 13-14 National Age Group Record (51.12).
Wu knocked his best time down by two-tenths, ranking him 7th all-time among 15-year-old Americans in the boys’ 200 free.
Erisman put up a time of 54.34 in the 100 free, overtaking Gretchen Walsh (54.38) as the fastest 15-year-old American ever and one of the fastest globally.
After two years of battling injury, Regan Rathwell qualified for the Canadian Olympic team by setting a personal best time of 2:09.38 in the women’s 200 back.
Denysenko broke his own Ukrainian NAG record for 15-16 boys in a time of 2:03.65, lowering the 2:04.39 standard he produced earlier this year.