Chanettee Wannasaen is tied atop the leaderboard of her home-country tournament with Japan's Nasa Hataoka after the opening round of the Honda LPGA Thailand on Thursday in Pattaya, Thailand.
Wannasaen was effective throughout a 7-under-par 65 opening round, racking up nine birdies against two bogeys. She finished with a birdie on the par-5 18th and hit 17 of 18 greens in regulation at the Siam Country Club Old Course.
"Today, I played really well on the approach shot," Wannasaen said. " ... It's pretty fun and I have a lot of memory in this course."
After a bogey on the par-4 2nd hole, Hataoka played bogey-free over the final 16 holes. That included three birdies in the final five holes, overcoming making just 14 of 18 greens in regulation by requiring just 26 putts.
It's the second time in as many LPGA events this season that Hataoka has had at least a share of the first-round lead. She led after the opening round of the Hilton Grand Vacations Tournament of Champions in late January at 6 under.
"Today was a good start," Hataoka said. "I think my tee shot and iron shot pretty well today. That's why I was able to make so many birdie chances today."
There's little separation between a large pack at the top of the leaderboard. South Korea's Somi Lee and Hye-Jin Choi as well as Scotland's Gemma Dryburgh are tied for third at 6 under. Dryburgh holed out for an eagle on the par-5 10th -- her first hole in her first LPGA event back after becoming a mother seven weeks ago.
After that, 10 players are tied for sixth at 5 under. That clump of competitors shooting 67 includes world No. 1 Jeeno Thitikul of Thailand, who is competing on her home course.
First playing in this event at 14 years old and now on the eve of her 23rd birthday, Thitikul was bogey free at 5 under, securing a pair of sand saves.
"Just grateful for everything that I really put the work in and it just pay off," Thitikul said, reflecting on her career after the first round. "And then also I think they should be happy on not just me doing, but all the Thai girls doing out there on the Tour."
There are eight Thai golfers competing in this year's event. Ariya Jutanugarn is also tied at 5 under, and Pajaree Anannarukarn is one of 10 golfers tied for 16th at 4 under. After shooting 1 over on the front nine, Anannarukarn surged back into contention with five birdies on a bogey-free back nine.
Angel Yin, who won the 2025 event, is tied for 26th at 3 under after the opening round.