It was lucky day for most non-seeded players in the quarterfinals round of 2017 Indonesia Open badminton tournament on Friday as they advanced to the next round after beating the favorites in rubber matches.

It is likely that the unfamiliar setting of the Jakarta Convention Center helped the non-seeded players. The tournament is traditionally held at the Istora indoor stadium, which is undergoing renovations for the 2018 Asian Games.

Qualifier India’s H.S. Prannoy, who stunned top-seed Lee Chong Wei of Malaysia in the second round, remained dominant in Friday’s quarterfinals as he again upset a favorite, sixth-seed Chen Long of China, in one of the rubber matches.

World number 25 Prannoy defeated the world number eight 21-18, 16-21, 21-19 after a 1-hour-and-15-minute battle in the men’s singles.

The win broke a record between the two players with a 3-1 victory for Long.

In the semis, Prannoy will face another qualifier, Kazuma Sakai of Japan, who earned the spot after defeating Rajiv Ouseph of Britain.

Meanwhile, Kidambi Srikanth of India, who beat Taiwan’s Tzu Wei Wang, will face second-seed Son Wan-ho of South Korea in the semis. Son earned the spot after ousting sixth-seed Chou Tien Chen of Taiwan.

In women’s singles, non-seed Nitchaon Jindapol of Thailand outwit world number one Tai Tzu Ying of Taiwan 21-19, 8-21, 21-17 for the quarter’s ticket. In previous matches, Jindapol defeated sixth-seed compatriot Ratchanok Intanon and two-time Indonesia Open champion Saina Nehwal of India.

Jindapol will meet Japan’s Sayaka Sato in the semifinals after the latter beat third-seed compatriot Akane Yamaguchi 21-17, 18-21, 21-18 in the quarters.

In men’s doubles, non-seeded pair Liu Cheng and Zhang Nan of China will meet compatriot Li Junhui and Liu Yuchen, third-seeded here, in the semis. Both pairs advanced to the next round after respectively beating sixth-seeded duo Takeshi Kamura and Keigo Sonoda of Japan and Taiwanese pair Lee Jhe-heui and Lee Yang in the quarters.

Second-seeded pair Mathias Boe and Carsten Mogensen of Denmark will either face host duo Fajar Alfian and M. Rian Ardianto or Thailand’s Kittinupong Kedren and Dechapol Puavaranukroh in the semifinals. The Danes beat Russian duo Vladimir Ivanov and Ivan Sozonov in Friday’s quarters.

In the women’s doubles, eighth-seeded pair Shiho Tanaka and Koharu Yonemoto of Japan as well as fifth-seeded duo Chen Qingchen and Jia Yifan of China all secured a spot in the semis.

The Japanese pair will either meet third-seeded duo Chang Ye Na and Lee So-hee of South Korea or hosts Della Destiara Haris and Rosyita Eka Putri Sari in the semis. Meanwhile, the Chinese pair will face either Thailand’s Puttita Supajirakul and Sapsiree Taerattanachai or Indonesia’s Anggia Shitta Awanda and Ni Ketut Mahadewi Istarani in the next round.

Indonesia has one pair in the mixed doubles, 2016 Olympic Games gold medalists Tontowi Ahmad and Liliyana Natsir. In Friday’s quarters, the Indonesians faced Malaysia’s Tan Kian Meng and Lai Pei Jing.

Should Tontowi and Liliyana win the quarters, they will meet either qualifiers LU Ching Yao and Chiang Kai Hsin of Taiwan or Malaysia’s Chan Peng Soon and Yen Wei Peck in Saturday’s semifinals.

The quarterfinal matches were scheduled to run until late Friday.

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