Bob MacIntyre blew a four-shot lead in the final round as world No. 1 Scottie Scheffler produced a moment of magic to clinch victory at the BMW Championship in Maryland.

OWINGS MILLS, Md. -- Robert MacIntyre ducked his head under the branches and climbed into a mess of bushes behind the fifth green without a golf club, first seeing if he could find his ball and then deciding if it was worth trying to play it.