Jim Furyk has taken the lead at the WGC-Bridgestone Invitational after a round of 63 in Ohio on Thursday.
The American is sitting at the top of the leaderboard after a sublime round of golf allowed him to build a lead of two shots ahead of Englishman Lee Slattery.
World number one Luke Donald was joined by a number of players on -4 after an impressive day's golf following his recovery from a sinus infection.
Tiger Woods, who recently revealed his delight at his recent form, is seven shots off the lead after an inconsistent day on a course where he has won seven times.
Rory McIlroy carded a level par round with Lee Westwood in contention heading into Friday on -2.