Dechapol Puavaranukroh and Sapsiree Taerattanachai will vie for their first BWF World Tour Super 750 title and hope to complete a Thai hat-trick at the Denmark Open today.
The Thai pair defeated Seo Seung-Jae and Chae Yu-Jung of South Korea 21-16, 17-21, 21-16 in 67 gruelling minutes to book their berth in the title match of US$775,000 event at Odense Sports Park yesterday.
Dechapol and Sapsiree will be keen to emulate their compatriots Tanongsak Saensomboonsuk and Ratchanok Intanon's successes in Odense after they won the men's and women's singles titles in 2016 and 2017 respectively.
Awaiting the Thai world No.13 duo in the final are top seeds Zheng Siwei and Huang Yaqiong of China.
Zheng and Huang also needed three games to defeat third seeds Tontowi Ahmad and Liliyana Natsir of Indonesia 21-11, 19-21, 21-17 in the other semi-final match yesterday.
Dechapol and Sapsiree lost to the world No.1 pair when they met at the China Open quarter-finals last month. Zheng and Huang went on to win the title.
World No.1 Kento Momota of Japan moved past Indian seventh seed Srikanth Kidambi 21-16, 21-12 to reach the men's singles final.
Second seed Momota will play the winner of the second semi-final between local hope Anders Antonsen of Denmark or Chou Tien-chen of Taiwan.
Momota became the first Japanese man to top the BWF rankings, replacing Denmark's Viktor Axelsen at the top of the list for men's singles last month.
The explosive 24-year-old won back-to-back tournaments in March and April this year before losing to Lee Chong Wei in the final of the Malaysia Open.
He beat Axelsen in the final of the Indonesia Open in July before winning the men's singles title at world championships the following month in Nanjing.
Momota also won his home Japan Open last month but finished a surprise runner-up behind Anthony Sinisuka Ginting at the China Open a week later, a second loss to the Indonesian in a few weeks after his reverse at the Asian Games in Jakarta.
Yuki Fukushima and Sayaka Hirota and Shiho Tanaka and Koharu Yonemoto will meet in an all-Japan final in the women's doubles event.
Top seeds Fukushima and Hirota beat third seeds Greysia Polii and Apriyani Rahayu of Indonesia 21-13, 21-16 while fifth seeds Tanaka and Yonemoto defeated Kim Hye-Jeong and Kong Hee-Yong of South Korea 21-12, 21-14.
Top seeds Marcus Fernaldi Gideon and Kevin Sanjaya Sukamuljo of Indonesia progressed to the men's doubles decider after beating compatriots Mohammad Ahsan and Hendra Setiawan 21-18, 24-22. They play Japanese fourth seeds Takeshi Kamura and Keigo Sonoda or Marcus Ellis and Chris Langridge of England in today's final.
Women's top seed Tai Tzu-ying of Taiwan was due to play No.7 seed He Bingjiao of China while Indonesia's Gregoria Mariska Tunjung and India's Saina Nehwal, both unseeded, were to due play in the women's singles semi-finals late last night.