"The golf course isn't very difficult, but the pin placements are," Singh said. "The pin placements are very much on little slopes and you've got to be on the correct side of the pin. A lot of times you're 6, 8 feet away, but you have to read it so well and make a perfect putt to make it."
The 44-year-old star won the season-opening Mercedes-Benz Championship and the Arnold Palmer Invitational in March to push his PGA Tour victory total to 31. He has won a tour-record 19 times since turning 40.
"It's not important in my head to go out there and be leading the golf tournament," Singh said. "It's important in my head to go out there and play solid golf."
Ryan Palmer (67) and Michael Putnam (68) were 8 under, and defending champion Jim Furyk (66) was another stroke back along with Cliff Kresge (65), Doug LaBelle II (68) and Brandt Snedeker (68). Hunter Mahan, the first-round leader after matching the tournament record with a 62, shot a 74 to drop four strokes back at 6 under.
"It didn't feel the same out there," Mahan said. "It's still there somewhere. I'll try to work it out and get it going again this weekend."
The top six players on the leaderboard played in fairly calm conditions the first two days, teeing off in the morning Thursday and afternoon Friday. The other half of the draw had tougher wind conditions in the afternoon Thursday and morning Friday.
"You'd expect to play in a little more wind than we did," Allan said. "We definitely had the good side of the draw."
Furyk, the winner last year at Hamilton Golf and Country Club, shot his 66 in the morning after opening with a 69 in windy conditions Thursday afternoon.
"It got a little breezy for our second nine," Furyk said. "But much, much better conditions to score in than we had yesterday. ... I was on the good end of the tee times last week at the British Open. So, at the end of the year it all evens out."
Divots: Allan and Mallinger tied for 13th last week in Milwaukee. ... David Hearn topped the 20 Canadians in the field, shooting a 74 to finish at 4 under. The Brantford player, the top Canadian last year when he tied for 20th, is making his first PGA Tour start of the season after playing 16 Nationwide Tour events.