London 2012 champion Li Xuerui kept her bid for back-to-back North American titles alive by reaching the women's semi-finals at the Badminton World Federation Canada Open.
The 27-year-old Chinese player won the US Open last week and knocked out Japan's Moto Hayashi in the quarter finals today in Calgary.
Li, twice a World Championship silver medallist who faced a huge injury lay-off after Rio 2016, won 21-13, 21-13 at the Canadian Winter Sport Institute as she continued her comeback.
She will now play another Japanese player in Asuka Takahashi in the last four, after she ended home interest in the tournament by beating Canada's seventh seed Rachel Honderich 21-17, 21-18.
Japan's second seed Sayaka Takahashi beat South Korea's Jeon Ju-i 21-10, 18-21, 21-8 to advance, and will play China's Cai Yanyan who was a 21-17, 21-12 winner over compatriot and fifth seed Gao Fangjie.
In the men's singles, all of the seeded players are now out after eighth-ranked Toby Penty of England lost 21-19, 12-21, 21-11 to China's Lu Guangzu.
He will play France's Thomas Rouxel in the last four after his 21-17, 18-21, 21-16 win over Germany's Max Weißkirchen.
Denmark's Kim Bruun was given a walkover into the semi-finals against Vietnam's Phạm Cao Cường, and will play Japan's Minoru Koga who defeated China's Zhao Junpeng 21-18, 17-21, 21-17.
The semi-finals will be played tomorrow.