Mixed doubles stars Dechapol Puavaranukroh and Sapsiree Taerattanachai moved into the quarter-finals of the US$600,000 French Open in Paris on Thursday.
The top seeds defeated Robin Tabeling and Selena Piek of the Netherlands 21-15, 21-17 in the last 16 round of the BWF World Tour Super 750 event at the Stade Pierre de Coubertin in Paris.
The Thai duo were runners-up at last week's Denmark Open -- a Super 1000 tournament.
They were joined in the last eight by fellow Thais Supak Jomkoh and Supissara Paewsampran, who progressed after a three-game battle.
The unseeded Thai duo fought back to upset eighth seeds Tan Kian Meng and Lai Pei Jing of Malaysia 20-22, 23-21, 21-14.
Three Thai women's singles stars were due to play late last night.
Second seed Ratchanok Intanon was to meet Pai Yu-po of Taiwan, fifth seed Pornpawee Chochuwong was to face Yvonne Li of Germany and eight seed Busanan Ongbamrungphan was to play Kirsty Gilmour of Scotland.
Yuta Watanabe and Arisa Higashino of Japan also progressed after they defeated Hoo Pang Ron and Cheah Yee See of Malaysia 21-16, 21-18 in the mixed doubles event.
The Japanese pair won the Denmark Open on Sunday.
Meanwhile Mathias Christiansen and Alexandra Boje of Denmark claimed a big upset, rallying to defeat fourth seeds Marcus Ellis and Lauren Smith of England 11-21, 21-14, 21-17.
Kanta Tsuneyama of Japan was the first player to reach the men's singles quarter-finals after he cruised past Angus Ng Ka Long of Hong Kong 21-9, 21-12.
Third seeds Fajar Alfian and Muhammad Rian Ardrianto of Indonesia booked their last-eight berth in the men's doubles after defeating French pair Christo Popov and Toma Junior Popov 21-12, 21-15.
