The most common way to throw a knuckleball is to take your index, middle and ring fingers and press your fingernails (those should be short and strong fingernails) just below the seams of the ball. Keep your pinkie hanging off loose and your thumb directly below the ball.

Is the knuckleball hard to throw?

Conclusion. The knuckleball is one of the most mysterious pitches in all of baseball. It's very difficult to hit because of the lack of spin and unpredictable movement, but it's also very difficult to throw.

Should a kid throw a knuckleball?

He should always throw it in conjunction with his fastball. He should throw it when he would throw a change up pitch. Unless it has a ton of movement then it should be treated as a change up pitch. Also just a bit of advice, a knuckleball moves the most at 72 mph and begins get movement and drop at about 45 mph.