TOKYO - Local star Akane Yamaguchi beat ex-world No 1 Wang Shixian of China in the Japan Open Saturday, setting the stage for an all-Japan women's singles final on Sunday. Yamaguchi, who ousted China's Li Xuerui the previous day, defeated seventh-seeded Wang 21-12, 15-21, 26-24 in the seesaw semi-final. Yamaguchi, also the winner of the Japan Open in 2013, will now face Japan's Nozomi Okuhara in the final on Sunday, who downed Tai Tzu Ying of Taiwan 21-12, 14-21, 21-19 in the semi-final on Saturday. In the men's singles field, two-time Olympic gold-medallist and five-time world champion Lin Dan swept aside Tommy Sugiarto of Indonesia 21-17, 21-17 in the semi-final. Lin will run into the final against Viktor Axelsen of Denmark, who beat Chou Tien Chen of Taiwan 21-19, 21-13 in the semi-final.