JERSEY CITY, N.J. -- Rising star Atthaya Thitikul birdied five of the final seven holes in a round of 7-under 65 to grab the halfway lead in the Mizuho Americas Open on Friday, with top-ranked Nelly Korda in contention one week after having her LPGA record-tying five tournament winning streak halted.
Thitikul, who is playing in her third event this year because of an injury to her left thumb, had a bogey-free round at Liberty National while playing in a group that included Korda and Ayaka Furue of Japan.
The 21-year-old from Thailand, who was last year's winner of the Rolex Vare Award for lowest scoring average, was two shots ahead of first-round leader So Mi Lee of South Korea and three in front of Korda, Mao Saigo of Japan, fellow Thai player Ariya Jutanugarn and rookie Gabriela Ruffels of Australia.
Another large group was four shots back, including Jutanugarn's sister, Moriya. Americans Andrea Lee and Megan Khang and Furue also were at 5 under in the event that lost defending champion Rose Zhang after three holes to an intestinal problem.
"When I can came here, play in Chevron, be able to play golf again, it's like -- it's just like click, and change my mind," Thitikul said. "Just be able to play golf it's good enough for me. It's just go enjoy. Just do the best that you can do out there."
Thitikul, who has two career LPGA wins in 2022 and already pocketed $3.85 million in career earnings, finished 12th in the Chevron and missed the cut by a stroke in the Cognizant Founders Cup last week.
She switched putters this week, and it clicked in the second round. It could have been better too. A long birdie putt at No. 18 lipped out.
"I played with Atthaya today, and my round felt like poop compared to hers," said Korda, who shot a 68, two shots better than her opening round. "She's playing phenomenal golf the past two days. I'm happy to be in it, three back at the halfway point, but hopefully I can give it my best."
In her recent winning streak that Zhang snapped last week, Korda trailed by five shots at the Seri Pak Championship, by four at the Ford Championship and by six in the T-Mobile Match Play, where the field was cut after the third round. She won them all.
"If you're not hitting it well and not giving yourself chances, you're never going to capitalize on this," Korda said. "Hopefully everything is flowing for me. Going to go practice a little now after my round and try to get things a little bit more dialed in for the weekend."
Lee (66) and Saigo (68) were Thursday additions to the field because of late withdrawals. They found themselves at the top of the leaderboard after 18 and were still there Friday. Lee had a 71, one shot more than Saigo.
The most interesting part of Lee's round was a change of caddies. After attending his son's graduation from elementary school in Orlando, Florida, regular caddie Andrew Tomasi arrived late Thursday and took over the bag from Lee's father, Tohyeun.
Lee, a five-time winner on the Korean LPGA, laughed when asked if she fired her father.
"My father said: 'It's over. My first and my last. My last caddie ever,'" Lee said in comments translated by her manager. "He was very tired."