Jennifer Hahn of Henderson, Nev. (USGA photo)

Yin, 16, of Arcadia, Calif., birdied four of her first six holes in Tuesday’s second round before a bogey on the par-3 eighth. She also bogeyed the par-3 12th, but responded with three consecutive birdies on Nos. 13 through 15 en route to 5-under 67. Yin, the No. 10 player in the Women’s World Amateur Golf Ranking™ (WAGR), finished runner-up in last month’s U.S. Girls’ Junior Championship at Tulsa (Okla.) Country Club.

“Confidence (definitely carried over),” said Yin, who was also the stroke-play medalist in the 2014 U.S. Girls’ Junior. “Maybe momentum [too]. I didn’t play golf for three days after I went back home (from the Girls’ Junior), so I took a break, which is good.”

Hahn, 21, of Henderson, Nev., made three birdies and one bogey for 2-under 70 after holding a share of the first-round lead on Monday.

“Staying patient was a big factor to that,” said Hahn, a rising senior at Vanderbilt University. “Ball-striking wasn't as good as yesterday. I was kind of crooked off the tee, found myself in the rough a lot, hitting punch shots, but I gave myself the best chances to save or get up and down for par.”

Nelly Korda, 17, of Bradenton, Fla., posted the low round of the day with a 6-under 66, which set the women’s course record and tied for the third-lowest 18-hole score in U.S. Women’s Amateur history. Starting on No. 10, Korda made five birdies on her first nine holes, and added birdies on Nos. 3 through 5 to get to 8 under. However, Korda bogeyed the seventh and eighth holes to finish stroke play in a tie for third with Hannah Green, of Australia.

“It was amazing,” said Korda, whose caddie is her father Petr Korda, the 1998 Australian Open tennis champion. “I've never been 8 under par, the lowest score [I’ve ever] shot was 7 under. To come one short of it is kind of a little sad, but I'm happy with how I played.”

Mariel Galdiano, 17, of Pearl City, Hawaii, shot 70 for the second consecutive day to take the clubhouse lead after the morning wave. Galdiano, No. 14 in the WAGR, made five birdies and three bogeys on Tuesday and finished stroke play in a tie for fifth place with Maria Fassi, 17, of Mexico. Fassi, the reigning Women’s Mexican Amateur champion, played a bogey-free back nine, her first nine, before shooting even par on her second nine.

“I started hitting the ball really well,” said Fassi, who joined Galdiano in last month’s U.S. Women’s Open field at Lancaster (Pa.) Country Club. “I wasn't missing anything, and I just took advantage of that and made some putts and just kept going through my round with easy pars, tap-ins.”

University of Oregon golfers Caroline Inglis and Cathleen Santoso each used bogey-free opening nines to climb up the leader board. Inglis, 21, of Eugene, Ore., fired a second-round 69 after shooting 72 on Monday. She finished stroke play tied for seventh with first-round co-leader Samantha Wagner, of Orlando, Fla., at 3-under 141.

“My putting was pretty good,” said Inglis, a rising senior. “I think all around it was just a pretty solid round in each part of my game.”

Santoso, 20, of Australia, made four birdies on her first nine en route to a second-round 68. She rounds out the top 10 at 142 with defending U.S. Women’s Amateur champion Kristen Gillman; 2015 U.S. Women’s Open competitor Muni He; Cindy Ha, a member of New Jersey’s winning team in the 2013 USGA Women’s State Team Championship; 2014 U.S. Women’s Amateur stroke-play medalist Bethany Wu; and Wanasa Zhou.

“I just gave myself a lot more opportunities for birdies, so that and then having the putts drop in, that’s the biggest difference,” said Santoso, a rising junior, on the improvement from Monday’s 74. “It makes or breaks a round.”No. 6 ranked amateur Sierra Brooks (143), 2015 U.S. Girls’ Junior champion Eun Jeong Seong (144) and No. 7 ranked amateur and two-time U.S. Women’s Open competitor Hannah O’Sullivan (145) are among the notables to advance to match play.

The match-play cut came at 4-over 148, forcing a 16-for-10 playoff, but play was suspended due to darkness before completion and will resume on Wednesday at 7:15 a.m. PDT. Kelly Su and Alice Jo advanced to match play with birdies on the first playoff hole, while Marisa Messana, Wenyung Keh and Lucia Polo were eliminated after making bogey. The remaining 11 players will play for eight spots.

Notables to miss the cut include six-time USGA champion Ellen Port (149), 2015 U.S. Women’s Amateur Four-Ball champion Rinko Mitsunaga (151), 2014 U.S. Girls’ Junior champion Princess Mary Superal (153), 2013 U.S. Women’s Mid-Amateur champion Julia Potter (159) and 2014 U.S. Women’s Mid-Amateur champion Margaret Shirley (159).

The 2015 U.S. Women’s Amateur Championship is open to female amateur golfers with a Handicap Index® not exceeding 5.4. It consists of 36 holes of stroke play followed by six rounds of match play, with the championship scheduled to conclude with a 36-hole final on Sunday, Aug. 16.

The match-play rounds of the 2015 U.S. Women’s Amateur Championship will be broadcast on Fox Sports 1. Coverage will be from 4 p.m. to 7 p.m. EDT on Aug. 12-16. Additionally, bonus coverage will be live streamed on usga.org on Aug. 13 and Aug. 16 from Noon to 2 p.m. EDT.

The U.S. Women’s Amateur Championship is one of 13 national championship conducted annually by the United States Golf Association, 10 of which are strictly for amateurs.