England's Rajiv Ouseph is through to the last eight in Denmark ©Getty Images

Londoner Rajiv Ouseph sealed a safe passage through to the quarter-finals of the Badminton World Federation Denmark Open in Odense with victory over Indonesia’s Jonatan Christie on day three.

The 31-year-old lost the first game but came back to defeat Christie 15-21, 21-17, 21-18 in an intense 69-minute battle.

The Indonesian is ten places above Ouseph in the world rankings but the latter took confidence from a shock win in the previous round over Chinese world number four Shi Yuqi.

Ouseph will now face Lee Hyun Il of South Korea who defeated Thailand's Tanongsak Saensomboonsuk, also coming from behind to win 15-21, 21-19, 21-14.

“I’m very happy to be in the quarter-finals and at a Premier Series it means a lot to me,” he told Badminton England.

“Yesterday gave me confidence but I knew today would be a tough match and that I would have to be aware of Jonatan’s strengths and weaknesses.

“I thought after the first game I needed to change my game style a bit and that worked for me in the second and third games.

“It will be another tough match tomorrow but I will give it my all and prepare as best I can and see what happens.”

H S Prannoy recorded his second successive win over three-time Olympic silver medallist Lee Chong Wei to also advance into the quarter-finals.

The unseeded Indian ousted the Malaysian former world number one 21-17, 11-21, 21-19 in a match that lasted an hour and three minutes.

"I am happy to beat him again today. Even at this age, he is one of the best players, who can play in any conditions," Prannoy said. 

"I am not thinking much ahead as I have done this before but couldn't win the title so I will just look at the next match."

HS Prannoy of India is safely through to the last eight in Odense © Getty Images
HS Prannoy of India is safely through to the last eight in Odense © Getty Images

Also through to the last eight is Vincent Wong Wing Ki after his 29 minute demolition of Japan's Kazumasa Sakai, 21-15, 21-7.

Chinese Taipei's top seed Tai Tzu-yin came from behind to defeat Thailand's Busanan Ongbamrungphan 12-21, 21-18, 21-8 in the women's competition.

She will now face South Korean Kim Hyo Min who saw off Thailand's Pornpawee Chochuwong 21-10, 24-22.

South Korea third seed Sung Ji Hyun saw off Denmark's home favourite Julie Dawall Jacobsen 21-6, 21-31 in just 31 minutes. 

Thailand's Ratchanok Intanon will face her in the quarter-finals after a relatively straight-forward 21-11, 21-16 victory over Canadian Michelle Li.

Japan's Sayaka Sato is through to face China's Yufei after a 21-17, 22-20 win against China's He Bingjiao. 

Yufei defeated Bulgarian Linda Zetchiri 21-6, 21-14 in a blistering 27 minutes.