Okay, now this is pretty incredible.

Isao Machii, a Japanese master swordsman, recently stepped into a batting cage and sliced a 100 mph fastball in half. He literally stepped into the box with his sword in its holster, waited for the pitch, and the cut the damn thing in half.

To the action footage:

The radar gun confirms the pitch traveled 100 mph (or 161 kmph). He cut that sucker right in half in the blink of an eye. Ridiculous.

Machii, as you're probably not surprised to learn, has set all sorts of world records for his work with a sword. In fact, the internet tells me he once cut a tennis ball traveling 440 mph (!) in half. A 100 mph fastball must have looked like a slow pitch softball toss by comparison.

(h/t Bleacher Report)

Isao Machii managed to slice a 100 mph fastball in half.
Isao Machii managed to slice a 100 mph fastball in half. (YouTube screen grab)