Article Photos: Phelps collects 18th gold medal in final race



China's Sun Yang reacts on the podium after winning in the gold medal in the men's 1500-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Jae C. Hong)

China's Sun Yang reacts on the podium after winning in the gold medal in the men's 1500-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Jae C. Hong)