CHASKA, Minn. (AP) — Ina Yoon stretched her lead at the Women’s PGA Championship with a 3-under 69 that put her five strokes up on the second-place pack after another strong South Korean showing Friday.

Yoon, who shot a record 63 in the first round at Hazeltine National Golf Club, had two bogeys with one birdie on the back nine to reach 12 under. The 23-year-old is seeking her first LPGA Tour victory.

“The remaining two days will obviously be nerve-racking, but being nervous is human nature, and I think I want to embrace that and focus on what I can in my shots,” said Yoon, who missed the cut at the U.S. Women’s Open this month after tying for fourth at the first major of the season at The Chevron Championship.

Nasa Hataoka, Brooke Henderson, A Lin Kim and Hae Ran Ryu were tied for second. Ryu shot a 64 for the best score of the day, three strokes better than Hataoka. Henderson finished with three straight birdies for a 68. Kim shot a 70. They all left the course in good spirits, yet trying to figure out how to make up five strokes.

“It’s halfway done. She had a great first half, so hopefully I can just have a great second half to try to make up the difference,” said Henderson, the Canadian who won the Women’s PGA Championship at age 18 in 2016 at Sahalee Country Club in Washington. “I feel like overall the way I’ve been playing the course has been really solid, so just hopefully I make a few more birdies and climb the board.”

LPGA Tour leader Nelly Korda, who opened her bid for a third straight major title this year with a quiet 70, had a 68 to climb into a tie for sixth place with Dongeun Lee at 6 under.

After rallying from a slow start to win the U.S. Women’s Open at Riviera Country Club in Los Angeles, Korda put herself in a viable position.

“It is hard to have a big lead going into the weekend. I was there at Chevron and you do feel a little bit more pressure, like everyone is hunting you down. I’m just going to focus on, as boring as it is, one shot at a time and see where that takes me,” Korda said. “I know the wind will be higher this weekend so it’s going to play probably a little bit more difficult, and I’m sure that the pins will be tricked up.”

Yoon, Kim, Ryu and Lee gave South Korean four of the top seven at the midpoint of a tournament that has so far enjoyed calm, dry and comfortable conditions with high temperatures in the mid-70s. The 36-hole average score is the lowest for this event since 2008 at Bulle Rock in Maryland.

“I think I like this kind of grass, and the course fit my eye as well,” Yoon said. “Yeah, I think I like this course.”

Yoon became the fourth player in the history of the Women’s PGA Championship, which dates to 1955, to lead by five or more strokes through 36 holes, following Mickey Wright (eight, 1958), In Gee Chun (six, 2022) and Cristie Kerr (five, 2010).

Korda again had hundreds of fans following her every shot, streaming from hole to hole as she traversed the lengthy 6,700-yard course in suburban Minneapolis.

After birdies on four of her first nine holes, Korda faded a bit down the stretch and finished with six straight pars as she fought a hook with her tee shots. She hit into the rough along the treeline to begin her back nine before two-putting for bogey on the first hole.

Projecting confidence and humility as the sport’s most dominant and popular player at the moment, Korda couldn’t help but laugh with caddie Jason McDede at the difference in layouts from the last major to this one.

“At Riv it’s a dead right and now it’s left,” Korda said. “I would’ve killed for this shot at Riv. But, yeah, it’s just golf. It’s funny, right? It always kind of humbles you, and you’re always kind of scratching your head a little bit in some ways.”