Watch how Round 4 unfolded.
USGA representatives discussed why Johnson was penalized.
Controversy raged over whether Johnson should be penalized.
Dustin Johnson gets a free drop thanks to a TV tower.
Lexus Tracer highlights Spieth and Dechambeau
Paul Azinger takes the Lexus greatest drive challenge.
Lexus Greatest Drive Challenge Teaser 2
The Lexus Greatest Drive Challenge is coming soon.
Holly Sonders joins 'FOX & Friends' to discuss the U.S. Open