LOS ANGELES -- Dustin Johnson has gone to No. 1 in the world with a world-class performance at Riviera.
Johnson birdied his last three holes of the third round Sunday morning for a five-shot lead, stretched it to nine shots and coasted home to an even-par 71 and a five-shot victory in the Genesis Open.
Johnson became the 20th player to reach No. 1 since the world ranking began in 1986, and he ended Jason Day's 47-week stay at the top.
The U.S. Open champion also got that elusive victory at one of his favorite courses.