Katie Ledecky remains the only swimmer to break a World Record on American soil since 2009, adding to her count with the 400 free on Saturday night in Irvine, California at the 2014 U.S. National Championships.
Almost as impressive was 18-year old Cierra Runge, who took 2nd in 4:04.57. That was the 4th-best time by a 17-18 in American history in this event.
The Georgia Bulldogs went 1-2 in the B-Final, with Amber McDermott leading wire-to-wire for a win in 4:08.90 out of lane 2, and Jordan Mattern placing 2nd in 409.66. The C Final, for 18 & under swimmers, was won by Madison Homovich of the North Carolina Aquatic Club in 4:12.77.
A Final (Katie Ledecky, NCAP, lane 4, 3:58.86)
B Final (Amber McDermott, Georgia, Lane 2, 4:08.90)
C Final (Madison Homovich, North Carolina Aquatic CLub, lane 6, 4:12.77)