Katie Ledecky Kaylee McKeown Caeleb Dressel Leon Marchand Record Holders Regan Smith Sarah Sjostrom Kate Douglass Jack Alexy Summer McIntosh Nicolo Martinenghi Torri Huske Team USA Léon Marchand Chinese Swimmers Elijah Winnington Kim Woomin Moesha Johnson Lukas Märtens Kristof Rasovszky Gretchen Walsh Oliver Klemet Maggie Mac Neil David Betlehem Nic Fink Ryan Murphy Lilly King Australian Swimmers Irish Athletes Drew Kibler Luke Greenbank Xu Jiayu Sarah Sjöström Training Pan Zhanle Michael Phelps Competitions Missy Franklin French Swimmers Kristof Milak Female Swimmers Katie Grimes Alex Walsh Chris Guiliano Matt Grevers Archie Goodburn Bobby Finke US Swimmers Ariarne Titmus Lukas Maertens