In 2009, Michael Phelps — who won a record eight medals in 2008 in Beijing — missed out on two finals and barely qualified for a third as he swam in an old-style swimsuit.

RESULTS. Caeleb Dressel got the help he needed and delivered a monumental butterfly leg to power the United States to a gold medal in the men's 4x100m medley relay, breaking the world record.. The U.S ...