A chip-in on the 17th hole helped Scottie Scheffler turn what started as a four-shot deficit into a remarkable win at the BMW Championship at Caves Valley in Owings Mills.

Robert MacIntyre entered the day holding onto a four-shot lead with World No. 1 Scottie Scheffler in solo second. That pair will play together again Sunday, and Scotland's MacIntyre says he's ready to feel the heat from the American crowd.

McIlroy has had an up-and-down week at Caves Valley, from day-to-day and from hole-to-hole. After a 4-under 66 on Friday, he turned in a rollercoaster round of 71 on Saturday which features four birdies, three bogeys and a double bogey.