Olympics Day 4 | Team USA swimming

United States’ Allison Schmitt wins the gold medal in the women’s 200m freestyle final. Schmitt previously won silver in the 400m freestyle and bronze in the 400m freestyle relay.  (Fabrice Coffrini / AFP / Getty Images)

Ryan Lochte, center, dives during the men’s 800m freestyle relay final. The United States won the gold medal.  ( Odd Andersen / AFP / Getty Images)

Michael Phelps lets out a joyful yell after he earned his 19th Olympic career medal in the men’s 4x200 freestyle relay.  (Robert Gauthier / Los Angeles Times)

Michael Phelps, right, embraces teammates poolside after winning the men’s 4x200 freestyle relay at the 2012 Olympics.   (Robert Gauthier / Los Angeles Times)

Conor Dwyer, Ryan Lochte and Ricky Berens cheer teammate Michael Phelps as the U.S. men’s 8000m freestyle relay team wins the gold medal.  (Streeter Lecka / Getty Images)

U.S. swimmer Michael Phelps wears his 19th Olympic medal, a gold he earned with teammates in the men’s 4x200 freestyle relay. It makes him the athlete with the most medals in Olympic history.  (Robert Gauthier / Los Angeles Times)

Michael Phelps kisses his gold medal after the podium ceremony of the men’s 800m freestyle relay.  (Christophe Simon / AFP / Getty Images)

U.S. swimmer Caitlin Levernz is overcome with emotion after winning the bronze medal in the women’s 200m individual medley.  (Robert Gauthier / Los Angeles Times)

United States teammates Arian Kukors, left, and Caitlin Leverenz embrace after Levernz won bronze in the women’s 200m individual medley swimming final.  (Matt Slocum / Associated Press)

Gold medalist Allison Schmitt waves following the medal ceremony for winning the women’s 200m freestyle swimming event in the London Olympics.  (Robert Gauthier / Los Angeles Times)