World number 114 Sang-Moon Bae and US PGA Championship winner Jason Day are tied for the lead at 11-under par ahead of the final day at The Barclays.
Both South Korean Bae and Australian Day hit seven-under-par rounds of 63 to move a stroke clear of Bubba Watson at the top of the leaderboard.
Watson began the day as leader at seven-under, and a round of 67 keeps the two-time Masters champion at touching distance from the frontrunners.
English pair Justin Rose and Luke Donald had productive rounds, posting scores of 63 and 65 respectively to elevate themselves up the leaderboard. Rose now moves to five-under for the tournament as he recovers from a 77 in the opening round.
Zach Johnson, Ryan Palmer and Henrik Stenson will begin the final day at nine-under, while Jason Dufner is among a group of four players at seven-under.
