MacIntyre showed some serious mental fortitude as he scrambled his way around Caves Valley on Saturday afternoon in front of some unruly patrons trying to make life difficult for the Scotsman.

Robert MacIntyre will take a four-shot lead into the final day of the BMW Championship in Maryland after keeping world number one Scottie Scheffler at bay at Caves Valley.

MacIntyre closed with six straight birdies in the opening round for a 62, and he started the second round with a shot into 5 feet on the 476-yard first hole for another birdie.