— American Ryan Lochte turned his much-anticipated duel with Michael Phelps into a blowout, pulling away to win the Olympic 400-meter individual medley by more than 3 seconds for the first U.S. gold medal in London.

— China picked up right where it left off from the Beijing Olympics, where it won the most gold medals with 51. The country won four on the first full day of competition in London: Yi Siling, who got the first gold of 2012 in women’s 10-meter air rifle shooting; Ye Shiwen, who set a world record in women’s 400 individual medley swimming; Sun Yang in men’s 400 freestyle swimming; and Wang Mingjuang in women’s 48-kilogram weightlifting.