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