Opening in gusty morning conditions at Pinnacle Country Club, Suwannapura played the back nine in five-under 30, closing with the birdies on the par-3 17th and par-5 18th.
"We just have fun out there," said Suwannapura, the 31-year-old Thai player with two career LPGA Tour victories. "Keep the momentum going. We literally play with the wind today. Got pretty gusty, too."
Former University of Arkansas star Maria Fassi was a shot back with Liqi Zeng, Carlota Ciganda and Ashleigh Buhai. Fassi, from Mexico, capped her college career with the 2019 NCAA individual title.
"To have some of the current Razorbacks be on the tee there in the morning was very special," Fassi said. "For me, it was a great day."
One of those current Arkansas players on the tee with Fassi - Maria Marin of Colombia - found herself on the leaderboard near Fassi, too, after a 65.
"For me to be here is like a privilege," Marin said. "Of course, I work really, really hard all season last year to be here and to get the exemption. It's just great."
Suwannapura is 110th in the world ranking. She won her last tour title in 2019, teaming with Cydney Clanton in the Dow Great Lakes Bay Invitational.
"I think it's everybody's game tomorrow," Suwannapura said. "I know a lot of girls out here going to go low. I hope I can go low the next two days. We'll see what happens."
The 18-year-old Zeng, from China, had five straight birdies on Nos.14-18 on her first nine. Yu Liu and Dottie Ardina matched Marin at 65.
Gaby Lopez, another former Arkansas star from Mexico, topped the group at 66.
"Everyone is here for the Razorback Nation," Lopez said.
Steph Kyriacou (67) is the leading Australian at four under. The 23-year-old from Sydney is one ahead of compatriot Robyn Choi and two in front of Grace Kim.
Defending champion Haeran Ryu shot 69. Lilia Vu, the No.2 player in the world, had a double bogey and three bogeys in a 71.
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