It had to happen. My impression of Japan is it's a pretty robot-and-baseball-happy country anyway, so it was only a matter of time before some genius combined these two things into a sort of high-tech Reese's Peanut Butter Cup of fun. Ishikawa Masatoshi (that's Ishikawa-sensei to you and me, Russ) of the University of Tokyo has invented a couple of robots who can pitch and hit.
My favorite part of this article is this little snippet:
Ishikawa is also working on getting the batting robot to be able to hit to all parts of the field.
Good luck, Ishikawa-sensei. The Atlanta Braves tried the same thing with Ron Gant back in the 90s and he was never the same hitter after that. And then he broke his leg.