Brock Mackenzie of Yakima, Wash., had five birdies in a row at one point to card a 4-under 66 on Friday at Uplands Golf Club and build a two-stroke advantage heading into the weekend at the Bayview Place Island Savings Open.
The 2010 champion made a tricky up-and-down at the par four 18th to keep his two shot cushion intact, a fact he knew would be significant heading into the weekend with a tightly-packed leaderboard at the PGA Tour Canada event.
Ten players were within five shots of the lead after 36 holes, including five within three.
“You never want to finish a round where you grinded all day and you’re kind of exhausted by giving one back,” said Mackenzie.
“Every stroke when you’re out in front is so important. It’s one more mistake that I can make and one less mistake than guys behind me can make,” he said.
Riley Wheeldon of Comox, B.C., shot a one-under 69 and is at six under.
For all the scores, click here.