Morikawa, who finished at 18-under 270, won for the fourth time in his last 34 starts on the PGA Tour. He finished three ahead of Brooks Koepka (70), Viktor Hovland (67) and Billy Horschel (70), who played with Morikawa in the final group and witnessed the supreme iron play that made him so hard to catch.
With several players wearing red to support Tiger Woods, Collin Morikawa wins the Workday Championship
