The second hitting absolute is called stride and separation. After the hitter initiates his weight transfer to his backside and begins to go forward, his stride foot will land under control and his hands will be in a separated position from his lower half. This is what creates torque in the swing. This is a fundamental position to understand in hitting. Stride and separate. As a hitter, when you get to the stride and separate position your stride foot should be slightly open towards the pitcher at about 30 to 40°. The knob of the bat should be pointed down at the catcher. In order to have a good swing you have to be in a good position to swing. This is the loaded athletic position that every great hitter gets to. This is the foundational position of your swing.
The fourth hitting absolute is the hips leading your hands. The swing starts from the ground up. Your big muscles or your lower half and hips must lead your hands. The more separation we can create between our hips and hands the better direction and bat speed we will have in our swing. The more we keep our hands back while our hips open up towards the pitcher, the more separation we will have. Your core will stretch and create torque which will pull the bat head through like a whip.
This is a big problem I see in amateur baseball. If you want to create the stretching of your core, your hips must start the swing, not the hands. If the hands go first before the hips, there will be no stretching of the core and the swing will be virtually all hands (diminishes bat speed and direction). Once the stretching of your core happens, then your hands take over to get you inside the ball and on plane.
The fifth and final hitting absolute is extension. Often times you will hear a coach say "stay through the ball". Extension occurs at contact and slightly after it. Extension allows the bat to stay in the hitting zone a long time. By properly extending through the baseball, we can ensure all the rotational energy we built up can be used. All of our energy must be going towards the field of play. Players who spin off the ball are compromising a significant amount of energy. This seems like a very simple concept. Personally, I've found that players who master extension hit for a power and a high average.
Take these for hitting absolutes to heart and watch how much your swing progresses. Remember, as long as the movement does not mess up one of the hitting absolutes, you can add in any personal style you want.
EXTRA: CSB Attack Angle and Bat Vertical Angle
Attack angle and bat vertical angle at contact are two key concepts to understand in staying through the baseball. Using my Zepp sensor (great tool I recommend to all hitting coaches), I have found that the perfect range for attack angle is 6 to 10 degrees upward. The swing is a slight uppercut and hitters who attack the ball in the range of 6 to 10 degrees stay through the ball for a long time. The optimum bat vertical angle at contact is -25 degrees. I have found the optimum range for staying through the ball for bat vertical angle at contact is -10 to -25 degrees.