All the power comes from the legs and core the upper body is just the extension to the ball. Keppinger hits the ball where its pitched and he will never be a home run hitter. He is a table setter and that is the problem with Wade he doesnt understand what certain hitters roles are in the line up.

I don’tean to be technical but it is lower body that does the most for power. You are correct that you have to have a strong core but the legs are the primary source of the power. And in terms of training, the core is not considered the upper body. It is it’s own section of the body. The core is responsible for transmitting the force that the lower body creates in an explosive movement to the upper body. Abdominal strains occur when the core is trying to make up for a lack of force being produced in the lower body. In terms of kepp increasing his core and upper body strength because his lower body is out of commission, you are underselling the rehab process. If anything it will be the opposite because of the time spent for rehab. Any extra time spent on upper body will be wasted because the body will be focused strengthening the lower body. Kepp will be in rehab probably the day after surgery for probably two hours a day. That is already the most he needs to be doing. Although most of his training will be lost body, most will strengthen his core through balancing exercises and the like. At this level, sports rehab can be even more rigorous than off-season training, so don’t expect kepp to all of a sudden be stronger but more well balanced muscularly.