49/53
Streeter Lecka/Getty Images
Michael Brinegar
Age: 21
Hometown: Columbus, Indiana
Events: 800 meter freestyle; 1,500 meter freestyle
Prior Olympic Victories: Rookie
50/53
Tom Pennington/Getty Images
Abbey Weitzel
Age: 24
Hometown: Santa Clarita, California
Events: 50 meter freestyle; 100 meter freestyle
Prior Olympic Victories: Rio 2016; one gold, one silver medal
51/53
Al Bello/Getty Images
Chase Kalisz
Age: 27
Hometown: Bel Air, Maryland
Events: 200 meter individual medley; 400 meter individual medley
Prior Olympic Victories: Rookie
52/53
Maddie Meyer/Getty Images
Phoebe Bacon
Age: 18
Hometown: Chevy Chase, Maryland
Events: 200 meter backstroke
Prior Olympic Victories: Rookie
53/53
Maddie Meyer/Getty Images
Haley Anderson
Age: 29
Hometown: Granite Bay, California
Events: 10 kilometer open water
Prior Olympic Victories: London 2012; one silver medal