Instead of dropping in the water, the ball skipped safely along the bank and he walked off the par-5 hole with an easy two-putt birdie.
The big Fijian wasn't as fortunate with some errant shots to the right, making two late bogeys en route to 3-under-par 68 and a one-stroke lead Saturday at the Canadian Open. He had 12-under 201 total on Angus Glen's North Course.
"I'm kind of disappointed with the way I finished," Singh said. "I thought I played better than a 68. I made a lot of mistakes that I normally wouldn't, but that's the way golf is. You know, you get good breaks out there as well. I got up and down a few times ... and got away with a bad tee shot on 11."
Singh, the 2004 winner at Glen Abbey in a playoff with Canadian star Mike Weir, won the Mercedes-Benz Championship and Arnold Palmer Invitational early this year to push his PGA Tour victory total to 31.
The three-time major champion has a tour-record 19 wins since turning 40 in February 2003.
"I've got to go out there tomorrow and play my game and make a lot of birdies and not make too many mistakes," Singh said. "I can't play conservative golf. There's so many birdie opportunities out there that I've got to attack the course, but smartly."
Steve Allan and John Mallinger, the second-round leaders at 10 under, were tied for second after a pair of 70s in windy and hot conditions Saturday.
First-round leader Hunter Mahan (67) was 10 under, and Jim Furyk, the winner last year in Hamilton, had 69 to join Pat Perez (66) at 9 under.
Allan took a share of the lead to the par-4 18th, but closed with bogey after his second shot bounced over the green.
"Overall, I played well, but didn't hole enough putts," Allan said. "You know, I made a couple nice little par putts, but that's about it. That's my deal for tomorrow. Hopefully, I can keep hitting the ball well and hole some more putts."
The 33-year-old Australian is seeking his first PGA Tour victory after winning the 1998 German Open and 2002 Australian Open.
"If I could pull off a win on the PGA Tour, what better way to do it than with one of the best players," Allan said. "Nobody would expect me to beat Vijay, but I know I've got the game to play well."
After nearly hitting into the lake on the par-5 11th, the 44-year-old Singh two-putted from the fringe to reach 13 under.
Singh bogeyed the par-4 13th after hammering a drive 330 yards through the fairway and into knee-deep fescue, then rebounded with an 8-foot birdie putt on the par-3 14th. He also bogeyed the par-4 16th after his approach shot settled in a difficult lie in the first cut of fescue, 25 yards right of the pin.