“Our tactic is to never give up,” said Watanabe, who is 11 years younger than Endo.
“We kept playing our style today and that’s why in the end it was a good win. We hadn’t seen them [Bay/Molhede] play, we only studied them on video. we just stuck to our tactics and maintained our play and that’s why it was a good result.
“It’s a fantastic tournament, we’re very pleased to play and we’ll be focused on tomorrow.”
Watanabe went on to say that he would prefer to play Japanese pair Takeshi Kamura and Keigo Sonoda in the finals – and he got his way.
Men’s and women’s doubles will both see all-Japanese finals with the third seeds also making the showpiece with a straight games win over a Danish pair, downing Kim Astrup and Anders Skaarup Ramussen 21-18 21-14.
The final promises to be a tight one, with Watanabe and Endo winning each of the last three clashes between the pair.