Yudai Kawai is a retired professional Japanese baseball player. He played pitcher for the Chunichi Dragons. Kawai announced his retirement on the 23rd of September 2016, and played his final game for the Dragons against the Hanshin Tigers at Nagoya Dome pitching 5 straight deliveries in a row to retire the pinch hitting Shunsuke Fujikawa.
Yūdai Yamaguchi is a Japanese film director who has worked mainly in the comedy and horror genres. He has "made a name for himself by mixing goofy gore with manga-esque escapades and plain utter weirdness".
Yudai Nitta is a Japanese track cyclist. At the 2012 Summer Olympics, he competed in the Men's team sprint for the national team. He is also active in Japan as a keirin cyclist.