OAKVILLE, Ontario — Hunter Mahan birdied the final three holes Friday for 8-under 64 and a two-stroke lead after the second round of the Canadian Open.
Coming off a ninth-place tie last weekend in the British Open, he had eight birdies in his bogey-free round at Glen Abbey to reach 13-under 131. "I kind of built off last week," Mahan said. "I got some good things I'm doing with my swing and everything, and feel good about that. I'm just going out there and really trying to trust my game."
American John Merrick was second after 62, tying the course record set by Leonard Thompson in 1981 and matched by Andy Bean in 1983 — both when Glen Abbey played to par 71 — and Greg Norman in 1986. He had an eagle and 10 birdies, and played the back nine in 6-under 31.
Bubba Watson (67) was alone at 9 under. First-round leader Brendan Steele shot 75 and was at 4 under.
Champions: American Mark Wiebe shot 5-under 65 to share the lead with Bernhard Langer (67) at 5-under 135 after the second round of the Senior British Open at Royal Birkdale in Southport, England. David Frost (68) was a stroke back. First-round leader Gene Sauers shot 70 to sit another stroke back with two others.
59 on Web.com Tour: Russell Knox shot the fifth 59 in tour history in the second round of the Boise Open in Idaho. The Scot, 28, had two eagles and eight birdies in his bogey-free round at 6,807-yard, par-71 Hillcrest Country Club. He led by one at 14-under 128 after opening with 69. Knox is the second tour player in two weeks to shoot 59, following Will Wilcox in the Utah Championship.