Olympics | Michael Phelps, Katie Ledecky Win Gold, Smash Records

Phelps, 31, won his 19th gold medal in the men’s 4x100 freestyle relay and Ledecky, 19, broke a world record in the 400 meter freestyle. SUBSCRIBE to ABC NEWS: Watch More on LIKE ABC News on FACEBOOK FOLLOW ABC News on TWITTER: GOOD MORNING AMERICA’S HOMEPAGE: