Keegan Bradley rode a hot putter to the outright lead after 18 holes of the BMW Championship, finishing Thursday's play with a seven-under 64.

Bradley entered the week ranked 44th in the FedEx Cup standings, outside the top-30 who will qualify for next week's Tour Championship, but put himself in a great position thanks in large part to his work on the greens.

He collected six birdies on the front nine, and according to Data Golf's strokes gained stats, Bradley was the top overall putter in the opening round, picking up 3.97 strokes with the flat stick, while also coming in seventh in the approach category (2.02 strokes gained).

It was a similar story for Adam Scott in outright second at six under, finishing third in putting (3.30 strokes gained) and 11th in approach shots (1.82 strokes gained).

In a tie for third at five under is the trio of Harold Varner III, Shane Lowry and Justin Thomas – but they all made it there in different ways.

Varner excelled in the tee-to-green category, putting a gap on the field as he gained 5.28 strokes, with Lowry in second-place at 3.32. While Varner was the third-best driver on the day, Lowry was actually a negative off the tee, but led the field in the approach category.

Meanwhile, Thomas was solid just about everywhere, finishing on the fringe of the top-10 in tee-to-green, around the green and putting categories – despite lipping out a four-footer for his only bogey on the 15th hole.

The logjam at four under includes Collin Morikawa, Xander Schauffele and Cameron Young, and there is a star-studded group one further back at three under featuring Patrick Cantlay, Scottie Scheffler, Rory McIlroy and Jordan Spieth. McIlroy will be left ruing a calamitous showing at the par-three 15th hole, where he found the water to triple-bogey when he was one stroke off the lead.

U.S. Open champion Matt Fitzpatrick headlines the group at two under, Hideki Matsuyama and Will Zalatoris are at one under, and recent 20-year-old winner Joo-hyung 'Tom' Kim is at even par.

Viktor Hovland and Jon Rahm will be disappointed with their rounds at two over, and the previously red-hot Tony Finau is likely out of the hunt as only two players shot worse than his six-over 77.