The season-opening Thailand Mixed event tees off at St Andrews 2000 Golf Club in Rayong today.
The 3.45 million baht tournament attracted a large number of Thai and foreign players.
They include Thai stars Vanchai Luangnitikul, Ploychompoo Wilairungrueng, Pattanavadee Kittikanok and Jakraphan Premsirigorn, Germany's Christoph Guenther and Rhianna-Maree Lewis of Australia.
The Thailand Mixed Tour is in its third successive season. It will kick off with two back-to-back events -- this week's stroke-play tournament and next week's Stableford format -- at St Andrews 2000.
"In the 2023 season, the tour is attempting to prove that there are no boundaries," tournament manager Arintapol Nuchasatiara said.
"We invited players from 16 countries of five continents who travelled across many seas to take part in this competition. The players come from diverse regions such as Asia, Europe, South America and Australia.
"This year, the tour has been officially co-sanctioned by the WPGA Tour of Australasia. This will add a new dimension to the tour and elevate its status."
Also in this week's field are in-form stars Amarin Kraivixien and Budsabakorn Sukapan.
Fresh from his breakthrough career victory on the Thai PGA Tour last month, Amarin, 26, has set his sights on another impressive finish.
"I feel physically ready after taking a week off," he said.
"I haven't played at St Andrews for 12 years, so it will be a challenge for me."
Budsabakorn has enjoyed an impressive year with four top-10 finishes on the Thai LPGA Tour. "I've been consistent this year and I hope to carry on the momentum to St Andrews," she said.