Olympic Gold Medal US Swimmer Missy Franklin Is Retiring Franklin cites chronic shoulder pain as the main reason behind her announcement. The 23-year-old has won
five Olympic gold medals
and set a world record in
the 200-meter backstroke. Missy Franklin, via 'ESPN' At just 17, Franklin burst onto the scene in the 2012 Summer Olympics in London, winning four gold medals and stealing
the hearts of Americans.