Scotland's Robert MacIntyre will take a five-shot lead over Scottie Scheffler into the weekend at the BMW Championship after firing a bogey-free 64 as Rory McIlroy finished strongly on day two.
MacIntyre's six-under-par round followed a sterling 62 at Caves Valley Golf Club leaving him at 14-under-par, and halfway home to his third PGA Tour victory after capturing the Canadian and Scottish Opens last year.
The bogey free round sees the Scot extend his lead from three shots to five, with world number one and FedEx Cup leader Scottie Scheffler sitting in second place.
Scheffler made five birdies and no bogeys in his round of 65, capped with a difficult two-putt par from 73 feet on the last hole.
Sweden's Ludvig Aberg and Japan's Hideki Matsuyama are third and fourth, respectively, after they each shot rounds of 64.
Masters champion McIlroy improved by four shots from Round 1 to 2, his 66 lifting him to four under par.
The Northern Irishman had a costly double bogey on the par-three third hole, but would make four birdies and an exquisite eagle on the par-five 17th to climb up the leaderboard.
Shane Lowry sits in a tie for 16th place after a round of one-under-par 69.
The Offaly man mixed three birdies with four bogeys and will be seeking a weekend charge to move into contention ahead of the season finale Tour Championship.
Only the top 30 players in the FedEx Cup standings at the end of this tournament will advance to next week's Tour Championship.
Once they're there, everyone will start at even par, as the tour eliminated the controversial "starting strokes" format.
