I am going to break this video down, and explain what this coach is saying that is wrong and then I will tell you what actually happens in a “high level” swing.
Step 1: Load hands (right idea, wrong demo) the scap load pulls the hands back.
Step 2: Stride (right idea) problem is the stride is too short and creates no momentum which sets up the problem in step 3:
Step 3: Back hip explosion- In the swing, the hip does turn, but the momentum created by the stride and the scap load, which should be step 1, power the hip turn because they set the hitter up with some serious torque. Since the hips begin to open slightly before foot and heel plant, the momentum and torque allow the hitter to simply continue the hip turn at heel plant. The planting of the heel gives the hitter something to rotate into. Another problem with this step is the demo. Notice how the hands come in front of the shoulder, and the bat is still pretty vertical. Letting your hands get in front of your shoulder creates slack, and the bat should be laying a lot flatter, in order to get on plane, and come up through the ball.
Step 4: Throw hands to ball, Knob to ball (never do this) and the demonstration again has a poor bat angle that is not on plane. Remember from previous videos I have shown, that the foot gets down when the ball is half way to the plate or closer, which means your bat needs to get on plane quickly and this swing does not allow that. Also, notice the flat shoulders, “No Tilt” this is a huge problem, because “Tilt” is the back shoulder dropping a little, to allow the bat to get on plane. Huge issue here, and look at his hands, one is almost off the bat. Knob to ball does appear to happen in the “high level swing” but not like this. Knob to ball is an effect not a cause. The knob points to the ball, due to hand torque, body torque, shoulder tilt.
Contact: He demonstrates the right contact position, so that is a plus. Problem is it doesn’t get there with a knob to ball, and wrist flip swing, you get to the good contact position due to rotation. If the player scap loads and uses the stride for momentum, then allows the torque plus momentum to power the swing, the rotation of the body will pull the hands and bat around, and if the hitter has proper rotation the torque of the hands will actually pull the barrel through and the hitter will achieve the contact position.
Step 6 and 7: I will lump together because the extension and finish are all results of proper rotation and landing. If the hitter is hitting into his front foot, the body rotation will again (beating a dead horse) pull the hands through to contact. If the hitter is using rotational forces the hands will be launched into the extension and finish phase after the front foot stops the rotation. So the hands are not the power or cause, they are an after thought, what happens to the hands all depends on whether or not the hitter has achieved torque and used proper rotation and momentum to power the swing.