Thailand's Khosit Phetpradab and Suppanyu Avihingsanon will meet in tomorrow's men's singles final at the Badminton World Federation Vietnam Open after safely coming through their last four matches today.
Avihingsanon, seeded 10th, enjoyed the more comfortable victory in the two semi-finals at the Nguyen Du Stadium in Ho Chi Minh City.
He overcame Malaysia's Goh Giap Chin in straight sets 21-15, 21-15.
The tournament's third seed, Phetpradab, endured a much more difficult match as he was forced to come from a game down to win.
Japan's Kodai Naraoka moved into the lead by winning the first set 21-12 before Phetpradab showed his class by winning the second and third 21-19, 21-10 to book his place in the final.
Japanese top seed Sayaka Takahashi is through to the women's singles final as all four of the top seeds remained in contention at the start of the day.
The tournament favourite claimed a 21-12, 21-7 win against third seed Dinar Dyah Ayustine of Indonesia.
Standing between her and the title is home favourite Vu Thi Trang, who upset second seed Hanna Ramadini of Indonesia in the semi-finals.
Vu, a bronze medallist at the 2010 Youth Olympic Games in Singapore, won 21-18, 21-17 to move into the final where she can expect to be roared towards victory by a boisterous home crowd.
Action is due to conclude tomorrow with a busy day of finals.