Team U.S.A. is hoping to add medals to an already impressive total with the start of Olympic track and field competitions, Friday.
The United States now tops China in the overall medal count 37-34.
In Thursday's competition, gymnast Gabby Douglas captured the women's all-around title, adding another gold for the United States.
The 16-year-old is now the first American to win gold in both team and individual events, and the first African American to win the all-around title.
The swim team continues to hold most of America's medals.
Michael Phelps won the 200-meter individual medley, earning his first individual gold of the London Olympics.
Ryan Lochte took the silver. And in a 200-meter backstroke upset, American Tyler Clary beat Lochte, the defending champ.
Clary's upset win set an Olympic record. Lochte had to settle for bronze.
Rebecca Soni won the gold in the 200-meter breaststroke, also setting a world record and becoming the first female swimmer to win back-to-back Olympic championships in the event.