LOS ANGELES – When you’ve waited this long to be No. 1 in the world, cramming 36 holes into one day in order to get there should be no big deal.
And the way Sunday unfolded at Riviera … well, it was fitting that a waterlogged weekend finished with a boat race.
Eleven players spent the back nine Sunday afternoon, the last stage of the Genesis Open’s golf marathon, within a shot or two of second place. Above them on the leaderboard, Dustin Johnson was, as he later admitted, “on cruise control,” his heavy lifting already done, and the top spot in the World Golf Rankings awaiting his final putt of the day.
He posted seven birdies and a 64 in the rain-delayed third round Sunday morning, teeing off at 7 a.m. and wrapping up around noon. Three more birdies in his first six holes in the afternoon round moved him to 20 under, nine shots in front and threatening…