Dustin Johnson is the First American to go 5-0 at the Ryder Cup Since 1979 Johnson went undefeated over three days at Whistling Straits to help the U.S. lead Europe 11-5 before Sunday singles matches.
https://www.si.com/golf/news/dustin-johnson-first-american-to-go-5-0-at-the-ryder-cup-since-1979

