Katie Ledecky swimming to a victory in the women's 500-yard freestyle in USA Swimming's 2013 Winter National Championship at the University of Tennessee’s Allan Jones Aquatic Center. (Photo by Jamie Squire/Getty Images)
Natalie Coughlin adjusts her swim cap prior to the women's 50-yard freestyle finals. (Photo by Jamie Squire/Getty Images)
![]( "2013 AT&T Swimming Winter National Championships")
- Missy Franklin congratulates Katie Ledecky after the finals of the women’s 500-yard freestyle. (Photo by Jamie Squire/Getty Images)
Missy Franklin competing in the women's 500-yard free finals. (Photo by Jamie Squire/Getty Images)
Finland-born Eetu Karvonen of Grand Canyon University relaxes prior to prelims on day two. (Wade Payne/Associated Press)
Swimmer's compete in prelims at the 2013 Winter National Championship on Friday morning in Knoxville, Tenn. (Wade Payne/Associated Press)
Andrew Seliskar stands on the podium with his gold medal after winning the men's 400-yard IM final. (Photo by Jamie Squire/Getty Images)
Andrew Seliskar swimming to a victory in the men's 400-yard IM. (Photo by Jamie Squire/Getty Images)
Nick Thoman smiles after setting the American record in the men's 100-yard backstroke. (Wade Payne/Associated Press)
Jamaican Olympian Alia Atkinson during the women's 200-yard breast final. (Photo by Jamie Squire/Getty Images)
Ilya Evdokimov breaking the surface during the men's 200-yard breast. (Photo by Jamie Squire/Getty Images)
Brooklyn Snodgrass leaves the starting block during the heats of the women's 100-yard back. (Wade Payne/Associated Press)
Katie Ledecky swimming to a new American record in the women's 1,650-yard freestyle. (Wade Payne/Associated Press)
Katie Ledecky waves toward the crowd after winning the gold medal in the women's 1,650-yard free. (Photo by Jamie Squire/Getty Images)
A view of Connor Jaeger from above during the men's 400-yard IM final. (Photo by Jamie Squire/Getty Images)
Missy Franklin takes a breath during the women's 100-yard free final. (Photo by Jamie Squire/Getty Images)
Josh Prenot during the heats of the men's 200-yard breast. (Photo by Jamie Squire/Getty Images)
Nathan Adrian pauses before competing in the men's 100-yard free final. (Wade Payne/Associated Press)
Matt Grevers stretches before the finals of the men's 100-yard back. (Wade Payne/Associated Press)
An all Cal podium. Missy Franklin poses alongside second place finisher Elizabeth Pelton and third place Rachel Bootsma after winning the womens' 100-yard back. (Photo by Jamie Squire/Getty Images)
Missy Franklin launches off the starting block at the start of the women's 100-yard back. (Photo by Jamie Squire/Getty Images)
5-foot-10-inch Elizabeth Pelton poses with Cal teammate Celina Li, 5 feet 3 inches, after winning the women's 200-yard IM. (Photo by Jamie Squire/Getty Images)
Michael Klueh adjusts his goggles before the start of the men's 500-yard free. (Photo by Jamie Squire/Getty Images)
Connor Jaeger stretches before the start of the men's 500-yard free. (Photo by Jamie Squire/Getty Images)
Cullen Jones looks for his time during the men's 50-yard free final. (Photo by Jamie Squire/Getty Images)
Josh Schneider tenses before the start of the men's 50-yard free. (Photo by Jamie Squire/Getty Images)
Amanda Weir readies herself for the start of the women's 50-yard free. (Photo by Jamie Squire/Getty Images)
Darian Townsend swimming the butterfly leg of the men's 200-yard IM. (Photo by Jamie Squire/Getty Images)
Caitlin Leverenz competes in a preliminary heat of the women's 200-yard IM. (Photo by Jamie Squire/Getty Images)