Takeshi Yamasaki, a former Nippon Pro baseball player, gave his best shot at hitting an insane 186mph fastball for a Japanese game show recently, and his performance was about the same as it would be if you were up at bat.
Yamasaki racked up 403 home runs over his 25-year career $4 to CBS Sports, but that doesn't really matter when a ball is coming at twice its normal speed from a pitching machine. In the video $4 to YouTube, Yamasaki just laughs after barely moving his bat while the ball whizzes right by him.
Here it is (the actual 186mph pitch happens around 4:30):