Japan reached the final at both the Thomas Cup and the Uber Cup.
Japan defeated five-time defending champion China in the Thomas Cup with a 3-0 victory over the favorites. The women's team then rallied from 2-0 down to overcome India 3-2 in the Uber Cup semifinals.
Japan will play Malaysia in its first ever appearance in the final of the Thomas Cup on Sunday and will take on defending champion China on Saturday in its first final appearance in the Uber Cup since 1981, when it won the last of its five titles.
Fourth-ranked Kenichi Tago and Kento Momoto starred in contrasting wins over China in the Thomas Cup semifinals.
Tago scored an easy 21-13, 21-11 win over No. 2 Chen Long in 43 minutes, while former world junior champion Momoto defeated No. 6 Du Pengyu 25-23, 18-21, 14-21. Chinese star Lin Dan didn't take the court because he was due to play the final singles match.
"The only way to win against China is to take them in the doubles and that was exactly our game plan," Momoto said. "As a team we are targeting to win the title and we have some experienced players in our team."
Japan coach Joo Bong-park, who is from South Korea, said the victory was a surprise.
"It came as a big surprise to us all," Park said. "What was even more surprising was the way Momota won the second singles against Du. If he had not, then the tie could have gone either way with Lin Dan to play the third singles."
In the other semifinal match, No. 1 Lee Chong Wei put Malaysia on the path to an easy victory and Chong Wei Feng sealed the 3-0 win over Indonesia.
In the Uber Cup, China made the final with a 3-0 victory over South Korea.
No. 1 Li Xuerui scored an easy 21-11, 21-19 win over Sung Ji-yyun, with Bao Yixin and Tang Jinhua combining for the doubles victory. No. 2 Wang Shixian then beat Bae Ju-yeon 21-13, 16-21, 21-10.