Katie Ledecky headlines a USA Swimming Pro Series meet in Atlanta, a tune-up for the U.S. Championships, live on NBCSN, NBCSports.com/live and the NBC Sports app starting Friday.
The four-time Rio Olympic champion Ledecky is joined by fellow gold medalists Simone Manuel, Lilly King, Ryan Murphy, Anthony Ervin and Nathan Adrian. Plus individual U.S. medalists Chase Kalisz, Cody Miller, Conor Dwyer and Katie Meili.
The field also includes Olympic champions Joseph Schooling (Singapore), Park Tae-hwan (South Korea) and Penny Oleksiak (Canada).