This is fun. It’s in Japanese, but you don’t need to speak Japanese to get what’s going on here. A special pitching machine that can fire a 186 m.p.h. fastball + an NPB hitter trying to square up. He does not succeed. Partially because he appears to be totally unaware that the pitch is going to be that fast.
Go to the 3:29 if you want to see his first effort.
Afterwards, the pitching machine talked about wanting to work on his offspeed stuff because all big league hitters can turn on a fastball.