Dechapol Puavaranukroh and Sapsiree Taerattanachai lost in the mixed doubles semi-finals of the US$750,000 French Open yesterday.
The Thai badminton pair were beaten by Seo Seung-Jae and Chae Yu-Jung of South Korea 14-21, 9-21 at Stade Pierre de Coubertin in Paris.
Dechapol and Sapsiree beat the Koreans at the Denmark Open a week ago at the same stage.
Seo and Chae will meet top seeds and world No.1 pair Zheng Siwei and Huang Yaqiong in today's final.
The Chinese, who beat Dechapol and Sapsiree in the Odense title match, will vie for back-to-back titles after beating Japan's Yuta Watanabe and Arisa Higashino 21-11, 21-14 in the other semi-final to progress.
Dechapol and Sapsiree were the only Thai players that made it to the last four in Paris after both Ratchanok Intanon and Kantaphon Wangcharoen lost in the women's and men's singles quarter-finals on Friday night.
Sixth seed Ratchanok fell to fourth seed Chen Yufei 21-16, 16-21, 13-21, while unseeded Kantaphon lost to another unseeded player Rasmus Gemke of Denmark 21-12, 11-21, 17-21.
Gemke's run in Paris ended yesterday after he lost to second seed Shi Yuqi 11-21, 16-21 in the men's singles semis.
The Chinese world No.2 awaits the winner of the second semi-final between top-ranked Kento Momota of Japan and sixth seed Chen Long, also from China.
In other early results yesterday, fifth seeds Mayu Matsumoto and Wakana Nagahara of Japan reached the women's doubles decider with a easy 21-10, 21-8 win over fourth seeds Greysia Polii and Apriyani Rahayu of Indonesia, while Han Chengkai and Zhou Haodong of China were through to the men's doubles title match after beating Taiwan's Lee Jhe-huei and Lee Yang 13-21, 21-18, 21-17.
