Yamaguchi faced a rematch of her Tokyo 2020 quarter-final against India's PV Sindhu at the Muntinlupa Sports Complex in the Filipino capital.

Unlike in Japan, Yamaguchi prevailed following a gruelling showdown after 66 minutes.

The world champion suffered a slow start as she fell to a 21-13 defeat in game one, before mounting a rousing comeback with 21-19 and 21-16 wins.

She will next face China's Youth Olympic Games runner-up Wang Zhiyi, who also came from behind in the other semi-final.

The 22-year-old eventually overpowered South Korean An Se-young after an initial scare to record a 10-21, 21-12, 21-16 victory.

Zii Jia was in dominant form as he breezed past China's Weng Hong Yang 21-11, 21-19 in 39 minutes in the men's singles semi-finals.

Jonatan Christie advanced from an all-Indonesian battle against Chico Aura Dwi Wardoyo.

The Asian Games champion got off to a flying start with a 21-9 win in the first game before Dwi Wardoyo levelled the scores after a 21-18 victory in the second game.

Christie then put the nail in the coffin in a hard-fought decider, posting a 21-16 win to take the victory.

China's Chen Qing Chen and Jia Yifan cruised into the women's doubles final after beating countrywomen Du Yue and Li Wenmei 21-12, 21-17.

They will face Japan's Rin Iwanaga and Kie Nakanishi, who also faced compatriots in Yuki Fukushima and Sayaka Hirota, winning 16-21, 21-15, 21-19.

The mixed doubles will have guaranteed Chinese winners as Zheng Siwei and Huang Yaqiong reached the final to face Wang Yilyu and Huang Dong Ping.

Indonesia's Pramudya Kusumawardana and Yeremia Erich Yoche Yacob Rambitan are due to play in the men's doubles final against Aaron Chia and Soh Wooi Yik of Malaysia.