Sergio Garcia holds the lead at 10 under par after three rounds of The Barclays on the Bethpage Black course in Farmingdale, New York.
Nick Watney is 2 strokes back at 8 under through three rounds.
Kevin Stadler, Brandt Snedeker, Bob Estes, Brian Harman, Greg Chalmers, Ryan Moore, John Senden and Phil Mikelson round out the top 10.
Mickelson is at 4 under, along with William McGirt, Tim Clark, Louis Oosthuizen, Lee Westwood, Tom Gillis, Charl Schwartzel and Tiger Woods.
With only a handful of events remaining on the tour calendar, many of the top PGA players are battling for FedEx Cup points and tuning up for the Tour Championship and the Ryder Cup in late September.
Round four of The Barclays is set for Sunday.