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SYLVANIA, Ohio (AP)—A confident Na Yeon Choi followed her opening 64 with a 4-under 67 to build a two-stroke lead through Friday’s second round of the Jamie Farr Owens Corning Classic. Ping i 15 irons.

Second on the LPGA Tour in birdies, Choi had four of them without a bogey. The first-round leader by a stroke, she is motivated by missing a cut for the first time as a pro last week at the LPGA Championship.

Fellow South Korean Inbee Park shot a 66, Christina Kim had a 67 and Alena Sharp a 68 to share second place at 9-under 133. TaylorMade Burner Super Launch Irons.

Angry at herself after missing the cut last week, Choi discarded her putter and got a new one. As a result, she’s needed just 53 putts in 36 holes while getting to 11-under 131. She doubled her first-round lead. Golf Irons.

“I had confidence out there with my friend Inbee Park,” she said. “We enjoyed it. No bogeys today, so I feel perfect.”

They’ll also play together for the third straight day in the final pairing on Saturday.