Start with the hands together, ball in the glove. The legs are positioned in the exact same manner as the high-cock drill, toes of the lead leg facing the target. The legs remain in this permanent, shoulder-width-apart position throughout the drill. However, the back foot will pivot onto its toes when the ball is released (like when you pivot your back foot during a golf swing or baseball bat swing). However, the distance of the two feet remain the same.
The key with the slider is to hold the ball slightly off-center (on the outer third of the baseball). Remember to slightly cock your wrist, but don't stiffen it. That way, you can still get good wrist-snap upon release. If your wrist is slightly cocked to the throwing hand's thumb side, your wrist-snap will enable you to have the pitch come off of the thumb-side of your index finger, which, in turn, promotes good spin on the ball.
Both partners will begin in a standing position, facing forward so athletes are side to side, each with one end of the KB Powerbands. The athlete performing the shoulder prevention exercises will put their hand or a towel high in their armpit, bring their elbow to their side, and make a 90 degree angle at the elbow. Holding the KB Powerbands athletes will maintain this position with their arm and begin to rotate just the bottom portion of their arm (forearm and hand) away from their body. It is important athletes do not let their elbow move away from their body. Keeping the elbow tight will allow athletes to experience the full benefits of the pitching drill. Athletes will move the hand away from their body at a normal speed while taking 4-5 seconds to control the resistance as the hand moves back toward the body.
Baseball players place a tremendous amount of stress on their arms and the ligaments which control how the arms and shoulders move. By practicing pitching drills which focus on developing and loosening these muscles athletes will be taking a step to avoid costly injuries. By adding core work into the pitching drill athletes will further protect their bodies by building a strong base at the center of their body.
To throw a curveball, a pitcher grips the ball tightly with the middle and index fingers together across the seams of the ball. The middle finger is critical, as the pitcher needs to make sure that the seams provide resistance against the middle finger during the release. This resistance helps the pitcher to put topspin on the ball as it's released with a tight rotation.
Let's begin. A pitcher will stand perpendicular to a straight line (like a foul line in the outfield grass or line on a gym floor). If the pitcher is on the pitching mound itself, he can use his spikes to drag out a straight line in the dirt 8-feet long and perpendicular to the rubber (i.e. directly in line with home plate). Then, he simply marks out the distance of his height and drags out a second line in the dirt--only this one is parallel to the pitcher's rubber. If the pitcher is not on a mound, he will simply place a second object like his hat on the ground. This will mark the distance he should be striding toward his target.
a slider spins more toward the vertical axis and hence tend to move across the horizontal plane with a slight to moderate downward angle (otherwise it’s a fat pitch, not a slider) L to R from the vantage of the mound for a LHP and R to L for RHP. A great R hand slider will look like a fastball inside to a RH batter and wind up moving away and down from him so the catcher catches it on the low outside corner of the plate and the batter is completely fooled and half way back to the dugout by then after whiffing at it. A curve spins toward the horizontal axis so that the rotation produces downward force (bernoulli) and hence it “breaks” or curves more than “slides”. A great curve will break 12 to 6 or down the face of a clock. A great slider is more 2 to 7 for comparison. Both wickedly effective pitches when thrown in the right count and settings.
I just did a search for “baseball pitching drills” and Google came back with 1,080,000 results. I share this to illustrate a point: there’s a lot of garbage out there on the internet. You can waste a lot of time trying to weed through it all. Even worse, if you go with some of the more popular drills, you’ll probably waste even more time performing them! Because the sad reality is that most pitching drills are, at best, great time-wasters and, at worst, totally counterproductive.
It is important when throwing a slider, or any breaking pitch in baseball, not to come "around" the baseball. When the pitcher "comes around" the ball, the pitcher puts extra tension on his pitching arm to throw that pitch. A slider is thrown with a regular arm motion, just like a fastball. Slider movement is a direct result of the fingertip pressure and grip. The pitcher may visualize throwing his fingers at the catcher in order to improve follow through and finish the pitching motion.
The main goal of Slider Domination is to simplify the learning process of pitching.  The extremely analytical world of baseball nowadays is not so much for the players. Never forget that.  It is for the decision makers at the top of the pyramid. Players at all levels will still have the natural pressures that come with performing.  Buying into the analytics just makes everything more difficult.   Please allow this simple breakdown of how to throw a Slider in just 3 simple steps to quickly advance your progress.  In conclusion, your obligations lie with mastering the Slider and elevating your pitching status.
Ok, so I know this whole page has the best baseball pitching drills on it, but out of this whole page, these are my two most favorite drills. The first is the wall drill and the second is the rocker drill. The second drill in this video is the same as Stevie’s favorite pitching drill that you’ll see below, but I go into a little further detail on how to perform this pitching drill correctly in this video. Check it out!