At the end of this corresponding video, you will look at a short clip from the Best of the Best.  Where a Slider thrown by Clayton Kershaw, is featured from a breakdown video/post I recently did of the lefty.  In slow motion, you can see that he has done everything correctly in his mechanics to enable him to Stay Behind the Baseball, Release it ‘Out in Front, and Throw it Downhill.  As for result, well it speaks for itself.

A 4 seam fastball is the most common pitch and the ideal grip for a position player as well on the transition from glove to hand. WHY? Because at release point the finger causes backspin on the baseball. The result is the ball does not drop as much as otherwise, without backspin. In other words, a 4 seam fastball is really appearing to defy gravity and travel more in a straight line. A 2 seam fastball is thrown with similar backspin but again on 11 o’clock axis.
Place your index and middle fingers. Grip the baseball with your index and middle fingers placed tightly together across an outer seam of the ball located at the horseshoe or U-shape seam. For right-handers, place your middle finger across the right half of the seam. Left-handers should do the opposite: place your middle finger across the left half of the seam. This should position your fingers towards the outside of the ball (off-center).
Releasing the Slider ‘Out in Front maximizes it’s effectiveness.  You are best positioned to finish the pitch and command the Slider to break how you wish. It’s going to break later and be drastically sharper. That what you want in this Dominant Pitch. The more consistently that you do this step, the more consistent your results will be. That’s what coaches and scouts want to see….and I know where you want to be as a pitcher….
In the stride phase of the pitching motion, a pitcher should be able to draw an imaginary line from the heel of his back foot, through the ball of his stride foot, and onward to the target. Keeping the lower body aligned in a straight line closes a pitcher's hips, directs the shoulders, and allows the throwing arm to reach the "high cock phase" of its arm path in the back of the pitcher's body. Additionally, if a pitcher lands too far to the glove-side of his body, he will open the shoulder too soon. This causes the pitch to be low and outside while creating stress on the arm and reducing velocity. If a pitcher lands too far to the throwing-side, he will inevitably have to throw across his body making the outside part of the strike zone difficult to hit. Plus, if a pitcher throws across his body, he creates an increased amount of stress on the arm.
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To start, righties should take their sign from their catcher from the right side of the rubber, lefties from the left (No. 1). Take a controlled, small step back keeping the weight of the upper body over the pivot leg (No. 2). Turn your hips to the catcher and lift your lead leg from the knee into the balance position (No. 3). Do not swing the lead leg into the balance position, it's simply a "lift."
I hope you enjoyed and learned something from this compilation of the best baseball pitching drills.  I suggest that if you haven’t already, check out my Pitching Mechanics page.  It’s where I break down a lot of the proper mechanics in the pitching delivery.  You should also check out my pitching program if you’re interested in throwing faster and more accurate.
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