Zach Johnson and Thomas Pieters ended Saturday's third round at the WGC-Bridgestone Invitational with a share of the lead at nine-under.
Johnson posted a five-under 65 on Saturday, while Pieters carded a four-under 66 at Firestone Country Club in Akron, Ohio.
They hold a one-shot advantage over Australia's Scott Hend:
Jimmy Walker was the 36-hole leader, but a four-over 74 dropped him into a tie for 10th at three-under.
Both Johnson and Pieters were tied with Hend at eight-under entering their final holes of the day, but they came through with clutch putts.