Olympics Day 4 - Swimming

LONDON, ENGLAND - JULY 31: Nathan Adrian of the United States reacts after competing in the Men's 100m Freestyle heat 6 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

Olympics Day 4 - Swimming

LONDON, ENGLAND - JULY 31: (L-R) Nathan Adrian of the United States, Cesar Cielo of Brazil and Nikita Lobintsez of Russia compete in the Men's 100m Freestyle heat 6 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

Olympics Day 4 - Swimming

LONDON, ENGLAND - JULY 31: Nathan Adrian of the United States looks after competing in the Men's 100m Freestyle semi final 2 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Photo by Ezra Shaw/Getty Images)

Olympics Day 4 - Swimming

LONDON, ENGLAND - JULY 31: (L-R) Nathan Adrian of the United States, Cesar Cielo of Brazil and Nikita Lobintsev of Russia compete in the Men's 100m Freestyle heat 6 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

US swimmer Nathan Adrian reacts after he

US swimmer Nathan Adrian reacts after he competed in the men's 100m freestyle semi-finals during the swimming event at the London 2012 Olympic Games on July 31, 2012 in London. AFP PHOTO / FABRICE COFFRINI (Photo credit should read FABRICE COFFRINI/AFP/GettyImages)

Olympics Day 4 - Swimming

LONDON, ENGLAND - JULY 31: Nathan Adrian of the United States competes in the Men's 100m Freestyle semi final 2 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Photo by Ezra Shaw/Getty Images)

Olympics Day 4 - Swimming

LONDON, ENGLAND - JULY 31: Nathan Adrian of the United States looks after competing in the Men's 100m Freestyle semi final 2 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012 in London, England. (Photo by Al Bello/Getty Images)

Olympics Day 2 - Swimming

LONDON, ENGLAND - JULY 29: (L-R) Adrian Nathan, Ryan Lochte, Cullen Jones and Michael Phelps of the United States pose with the silver medals won during the Men's 4 x 100m Freestyle Relay final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Jamie Squire/Getty Images)

2012 Team USA Media Summit

DALLAS, TX - MAY 14: Swimmer, Nathan Adrian, poses for a portrait during the 2012 Team USA Media Summit on May 14, 2012 in Dallas, Texas. (Photo by Ronald Martinez/Getty Images)

Santa Clara International Grand Prix - Day 2

SANTA CLARA, CA - JUNE 01: Nathan Adrian dives in at the start of the men's 100 freestyle during day 2 of the Santa Clara International Grand Prix at George F. Haines International Swim Center on June 1, 2012 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)

2012 U.S. Olympic Swimming Team Trials - Day 5

OMAHA, NE - JUNE 29: (L-R) Matt Grevers, Cullen Jones, Nathan Adrian and Ricky Berens celebrate during the medal ceremony for the Men's 100 m Freestyle during Day Five of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 29, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

2012 U.S. Olympic Swimming Team Trials - Day 6

OMAHA, NE - JUNE 30: (from right) Anthony Ervin, Nathan Adrian, Garrett Weber-Gale, Adam Small, Joseph Hall Jordan Smith and Christopher Pipes get set to dive off of the block at the start of preliminary heat 17 of the Men's 50 m Freestyle during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)

2012 U.S. Olympic Swimming Team Trials - Day 5

OMAHA, NE - JUNE 29: Nathan Adrian looks on prior to swimming in the championship final of the Men's 100 m Freestyle during Day Five of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 29, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

Nathan Adrian of the US Swimming Olympic

Nathan Adrian of the US Swimming Olympic team poses for pictures during a photo session during the 2012 Team USA Media Summit on May 14, 2012 in Dallas,Texas.AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/GettyImages)

2012 U.S. Olympic Swimming Team Trials - Day 4

OMAHA, NE - JUNE 28: (L-R) Garrett Weber-Gale, Nathan Adrian and Jimmy Feigen compete in the first semifinal heat of the Men's 100 m Freestyle during Day Four of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 28, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

2012 Team USA Media Summit

DALLAS, TX - MAY 14: Swimmer, Nathan Adrian, poses for a portrait during the 2012 Team USA Media Summit on May 14, 2012 in Dallas, Texas. (Photo by Nick Laham/Getty Images)

2012 Indianapolis Grand Prix - Day 1

INDIANAPOLIS, IN - MARCH 29: Adrian Nathan celebrates his victory in the men's 100 meter freestyle competition the during day one of the 2012 Indianapolis Grand Prix at the Indiana University Natatorium on March 29, 2012 in Indianapolis, Indiana. (Photo by Dilip Vishwanat/Getty Images)

2011 AT&T Winter National Championships

ATLANTA, GA - DECEMBER 01: Nathan Adrian celebrates after winning the men's 50m freestyle finals during the 2011 AT&T Winter National Championships at the Georgia Tech Aquatic Center on December 1, 2011 in Atlanta, Georgia. (Photo by Streeter Lecka/Getty Images)

USOC Portrait Shoot

WEST HOLLYWOOD, CA - NOVEMBER 19: Swimmer Nathan Adrian poses for a portrait during the USOC Portrait Shoot at Smashbox West Hollywood on November 19, 2011 in West Hollywood, California. (Photo by Harry How/Getty Images for USOC)

2011 ConocoPhillips USA Swimming National Championships

PALO ALTO, CA - AUGUST 04: Jason Lezak (L) and Nathan Adrian (C) and James Feigen (R) launch off the blocks into the water at the start of the 50 meter free during the 2011 ConocoPhillips National Championships at Stanford University's Avery Aquatic Center on August 4, 2011 in Palo Alto, California. Adrian won the race.(Photo by Brian Bahr/Getty Images)

In a picture taken with an underwater ca

In a picture taken with an underwater camera US swimmer Nathan Adrian competes in the heats of the men's 50-metre freestyle swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 29, 2011. AFP PHOTO / FRANCOIS XAVIER MARIT (Photo credit should read FRANCOIS XAVIER MARIT/AFP/Getty Images)

(L-R) Bronze medalists of the US Garret

(L-R) Bronze medalists of the US Garret webber-Gale, Nathan Adrian, Jason Lezak and Michael Phelps pose on the podium during the medal ceremony for the men's 4x100-metre freestyle swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center, in Shanghai, on July 24, 2011. AFP PHOTO / PETER PARKS (Photo credit should read PETER PARKS/AFP/Getty Images)

10th FINA World Swimming Championships (25m) - Day Four

DUBAI, UNITED ARAB EMIRATES - DECEMBER 18: Nathan Adrian of USA competes in the semi final of the Men's 100m Freestyle during the 10th FINA World Swimming Championships (25m) at the Hamdan bin Mohammed bin Rashid Sports Complex on December 18, 2010 in Dubai, United Arab Emirates. (Photo by Shaun Botterill/Getty Images)

AT&T Short Course National Championships

COLUMBUS, OH - DECEMBER 02: Nathan Adrian smiles after winning the Men's 50 yard freestyle final on day one of the AT&T Short Course National Championships at McCorkle Aquatic Pavillion on December 2, 2010 in Columbus, Ohio. (Photo by Chris McGrath/Getty Images)

2010 Mutual of Omaha Pan Pacific Championships

IRVINE, CA - AUGUST 21: Nathan Adrian celebrates after winning the men's 50m freestyle final during the Mutual of Omaha Pan Pacific Championships at the William Woollett Jr. Aquatic Center on August 21, 2010 in Irvine, California. (Photo by Stephen Dunn/Getty Images)

Gold medal winner Nathan Adrian of USA (

Gold medal winner Nathan Adrian of USA (C), silver medal winner Cesar Cielo of Brazil (L) and bronze medal winner Brent Hayden of Canada pose on the podium for the men's 50m freestyle final at the Pan Pacific Swimming Championships in Irvine, California on August 21, 2010. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)

Nathan Adrian of USA reacts to his win i

Nathan Adrian of USA reacts to his win in the men's 50m freestyle final at the Pan Pacific Swimming Championships in Irvine, California on August 21, 2010. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)

2010 ConocoPhillips National Championships - Day 4

IRVINE, CA - AUGUST 06: Nathan Adrian on the pool deck after his first place finish in the Men 100 LC Meter Freestyle Final during the 2010 ConocoPhillips National Championships at the William Woollett Jr. Aquatics Complex on August 6, 2010 in Irvine, California. (Photo by Harry How/Getty Images)

Santa Clara Invitational

SANTA CLARA, CA - JUNE 19: Nathan Adrian (center), Adam Brown (left), and Matthew Grevers (right) celebrate their first, second, and third place finishes in the mens 50 meter free finals at the XLIII Santa Clara International Invitational, a USA Swimming Grand Prix event, on June 19, 2010 in Santa Clara, California. (Photo by Brian Bahr/Getty Images)

Santa Clara Invitational

SANTA CLARA, CA - JUNE 19: Nicolas Oliveira (front), William Copeland, and Masayuki Kishida launch off the blocks for the mens 50 meter freestyle final at the XLIII Santa Clara International Invitational, a USA Swimming Grand Prix event, on June 19, 2010 in Santa Clara, California. Nathan Adrian won the race. (Photo by Brian Bahr/Getty Images)

Duel in the Pool - Day One

MANCHESTER, ENGLAND - DECEMBER 18: Nathan Adrian of USA in action during the Men's 4X100m Medley Relay during Day One of the Duel in the Pool at The Manchester Aquatic Centre on December 18, 2009 in Manchester, England. (Photo by Alex Livesey/Getty Images)

AT&T Short Course Nationals Day One

FEDERAL WAY, WA - DECEMBER 03: Cullen Jones (L) and Nathan Adrian dive off the blocks at the start of the 50 yard freestyle final during day one of the AT&T Short Course Nationals at Weyerhaeuser King County Aquatic Center on December 3, 2009 in Federal Way, Washington. (Photo by Jonathan Ferrey/Getty Images)

Swimming Day Four - 13th FINA World Championships

ROME - JULY 29: Nathan Adrian of the United States competes in the Men's 100m Freestyle Heats during the 13th FINA World Championships at the Stadio del Nuoto on July 29, 2009 in Rome, Italy. (Photo by Quinn Rooney/Getty Images)

U.S. Olympic Swim Team Media Day

PALO ALTO, CA - JULY 12: Nathan Adrian of the U.S. poses for a portrait during the U.S. Olympic Swim Team Media Day at Stanford University on July 12, 2008 in Palo Alto, California. (Photo by Jed Jacobsohn/Getty Images)

U.S. Swimming Olympic Trials - Day Six

OMAHA, NE - JULY 04: (L-R) Nathan Adrian, Cullen Jones and Jason Lezak prepare for the preliminary heats of the 50 meter freestyle during the U.S. Swimming Olympic Trials on July 4, 2008 at the Qwest Center in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)

9th FINA World Swimming Championships (25m)

MANCHESTER, UNITED KINGDOM - APRIL 13: Nathan Adrian of United States poses with the gold medal during the medal ceremony for the Men's 100m Freestyle Finalduring the ninth FINA World Swimming Championships (25m) at the MEN Arena on April 13, 2008 in Manchester, England. (Photo by Alex Livesey/Getty Images)

Members of the US 4 x 100m Freestyle tea

Members of the US 4 x 100m Freestyle team: Ryan Lochte, Bryan Lundquist, Nathan Adrian and Doug Van Wie celebrate after winning the gold medal in their event on the first day of the ninth FINA World Short-Course Swimming Championships at the MEN Arena in Manchester, in north-west England, on April 9, 2008. AFP PHOTO/LEON NEAL (Photo credit should read Leon Neal/AFP/Getty Images)