He said: "I feel like I'm sort of on a mission here". Playing the back nine first, the Northern Irishman made six straight birdies from his ninth hole, the 18th, to go nine under and raise the possibility of shooting 59. Tommy Fleetwood is one shot behind Woods after hitting eight birdies for an eight-under-par round of 62 to charge up the leaderboard.
Four golfers are tied for the third place, they are Keegan Bradley, Alexander Noren, Rickie Fowler and Hideki Matsuyama.
And while DeChambeau admits to being a "little tired", he is eager to take on the Aronimink Golf Club course which played host to the 1962 PGA Championship and more-recently the PGA Tour's 2010 and 2011 AT & T National.
Australia's Dimitrios Papadatos leads by four shots on 16-under par thanks to a second successive, eight-under 63 with Sharvin tied 29th on five-under after a 66 and Galbraith three-under after a 70.
The top 30 players in FedEx Cup points after the BMW Championship advice to the PGA's final big event - the Tour Championship in Atlanta.
Two late bogeys stopped McIlroy from grabbing the outright lead. A victory at Aronimink might even be enough for Jim Furyk to take the 24-year-old from San Diego as the final captain's pick for the Ryder Cup.
"You don't get many opportunities to break 60 and today was one of them", he said. 9, 10, 11 in the standings - and has one more pick after the BMW Championship. Following a 308-yard drive down the left side at the 444-yard par-4, he hit a solid approach to just under 20 feet and drained the birdie putt to get to 1-under for the day.
Still, but for a few narrow misses with a putter that had been so steady Thursday, Woods would've drawn close to Schauffele.
Schauffele also needs a good week to get to Tour Championships at East Lake, and his goal would be to extend his season an additional week in France at the Ryder Cup.
"Still have a good chance tomorrow", Schauffele said. I think with the way the conditions are, especially with the rain that's forecast, I can't see the scoring being any different.
Chase Koepka, the younger brother of U.S. Open and PGA Championship victor Brooks Koepka, shot 65. "I lose strength and I lose power and endurance".
- Unnamed Trump Official Cites "Quiet Resistance" Within Administration
- Mac Miller Dead at 26 After Apparent Drug Overdose
- Syria war: Idlib rebels targeted by 'fiercest raids in weeks'
- Yes, Serena Williams was treated unfairly in U.S. Open loss
- Missouri college drops Nike over new Kaepernick ad campaign
- 2+2 dialogue: Sushma, Sitharaman meet with American counterparts
- Dead in Mass Shooting at Fifth Third Bank Building in Downtown Cincinnati
- Ben Stiller cheered on Rafael Nadal from player's box during epic match
- Sabotage blamed for International Space Station's leak
- Trump Tells Montana Rally Crowd: If I Get Impeached, it's Your Fault