Spaniard Sergio Garcia maintained a three-shot buffer atop the leaderboard after the third round of the World Golf Championships Bridgestone Invitational in Ohio.
Fresh from a course record equalling nine-under 61 in round two, Garcia carded a tidy three under 67 to push out to 14-under for the tournament.
He is three clear of world No.2 Rory McIlroy who put up a 66 to be 11-under and set up a Monday showdown.
The Australian golfer Marc Leishman managed a 68 to sit third on his own at nine-under par, five back.
He will play in the penultimate group with compatriot and world No.1 Adam Scott who put up the equal best score of the day, a five-under 65 to move to eight-under and share fourth with Justin Rose (70) and Keegan Bradley (67).