The ornamental design for a three piecebaseballbatgrip augmentation, as shown and described.
FIG. 1 is a perspective view of the three piece baseball bat grip augmentation showing my new design, with a baseball bat shown in phantom.
FIG. 2 is a perspective view of the three piece baseball bat grip augmentation showing my new design.
FIG. 3 is a front elevation view of the three piece baseball bat grip augmentation of FIG. 1.
FIG. 4 is a left side elevation view of the three piece baseball bat grip augmentation of FIG. 1, the right side elevation view being a mirror image of the left side view.
FIG. 5 is a top plan view of the three piece baseball bat grip augmentation of FIG. 1; and,
FIG. 6 is a bottom plan view of the three piece baseball bat grip augmentation of FIG. 1.