Although he 's not a switch hitter , he works both sides to ensure muscular balance .
Schumaker goes to work , explosively slamming an 11 - pound sledgehammer on a tire positioned upright against a wall .
Although Schumaker 's not a switch hitter , Schumaker works both sides to ensure muscular balance .
Schumaker goes to work , explosively slamming an 11 - pound sledgehammer on a tire positioned upright against a wall .