Shane Lowry moved to the top of the leaderboard after making a bright start on the final day of the WGC-Bridgestone Invitational.
Birdies at the second and eighth holes took the Irishman to the turn in 33, and with overnight co-leaders Jim Furyk and Justin Rose dropping shots early on, the 28 year old led the field heading into his back nine.
Lowry then made another gain at the tenth to go ten under par with eight holes left to play.
Furyk, who began the day on nine under, made a gain at the second to increase his lead before dropping a shot at the par three fifth.
Another bogey at the eighth saw Furyk slip back to eight under alongside countryman Bubba Watson, who fired four birdies and a solitary bogey in his opening 11 holes.
Rose fell off the top of the leaderboard when he carded bogeys at the fourth and seventh to drop to seven under par.
But the World Number Eight was back in a share of second place after a superb birdie at the tricky par four ninth.
Meanwhile Ryder Cup star Ian Poulter started strongly, carding an eagle on the par five second, but he then fell off the pace after a double bogey at the fourth and bogeys at the sixth and seventh, ninth and tenth.
Søren Kjeldsen fired seven birdies and three bogeys as he posted a battling 66 on Sunday to finish on three under par.