Jim Furyk is one round away from becoming the third wire-to-wire winner in the history of the WGC-Bridgestone Invitational.
Furyk shot a third round of even-par 70 at Firestone C.C. to maintain a one-shot lead over Louis Oosthuizen at 11 under par.
Keegan Bradley is third at 7 under par, a shot ahead of Rory McIlroy and Steve Stricker.
A trio is tied for fifth at 5 under, including Bo Van Pelt, Justin Rose and John Senden.
Tiger Woods got back to even par for the week, shooting 68 to trail Furyk by 11 shots. Branden Grace, Woods' playing partner for a third consecutive day, shot 66 to reach 2 under.
On Sunday, Furyk will look to join Woods (2000) and Stewart Cink (2004) are the only players to have led this event from start to finish.