At seven-under 133, Garnett had a one-stroke lead over Robert Streb and Chris Stroud, who made five putts from more than 20 feet in a round of 64. Streb shot 68.
"I'm just keeping my head down and trying to make as many birdies as possible," Garnett said. "I'm going to try to embrace it this weekend and have fun, and we'll see where we stand come Sunday."
The 30-year-old Garnett is from Gallatin, Mo., a town of about 1,800 people. He has only one top-10 finish in his 18 previous starts on the PGA Tour and has never won on the second-tier
"I think each and every week the rookies feel more comfortable. I know I have," Garnett said. `You can't get down on yourself being a rookie. … It's been fun, and I'm learning each and every day."
Shane Lowry birdied his closing two holes for a two-under 70 to join
Lowry overcame a double bogey on the ninth hole by making four birdies on his back nine to erase a two-shot deficit to Bjorn, who carded a 72 on a day of intermittent rain showers. The duo was four shots clear of the field with 10-under totals of 134.
Spain's Rafa Cabrera-Bello (73) and former BMW PGA winner
Catriona Matthew remained atop the Airbus
The 44-year-old Matthew had a five-under 67 to reach 13-under 131 on the Crossings Course. The 18-year-old Hull also shot 67.
Matthew had six birdies and a bogey — on the par-four ninth — in her afternoon round. The Scot won the last of her four
Hull also dropped a stroke on No. 9, the final hole of her morning round. The English player birdied Nos. 6-8 and had five birdies in a seven-hole stretch before closing with her lone bogey of the week.
Anna Nordqvist, Jessica Korda and Hee Young Park were 10 under. Nordqvist, the winner this year in Thailand and Carlsbad, had a 66. Korda, the Bahamas champion, shot 67, and Park had a 66.
Tom Watson shot a three-under 68 on Friday for a share of the lead in the Senior PGA Championship at Benton Harbor, Mich., with fellow Hall of Famer Bernhard Langer as well as Colin Montgomerie and three other players.
The 64-year-old Watson, playing alongside Langer and Montgomerie, had five birdies and a double bogey — on the par-four 12th — to reach four-under 138 after two rounds at Harbor Shores. Langer also had a 68, and Montgomerie shot 69 to join Watson, Bart Bryant, Steen Tinning and Kiyoshi Murota atop the leaderboard. Bryant shot 67, Tinning 66, and Murota 65.