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.

Robert MacIntyre leads at 16-under, but Scottie Scheffler lurks just four shots back as the BMW Championship final round tees off Sunday.