The ornamental design for the sports jersesy pillow, as shown and described.
FIG. 1 is a front elevation of a pillow showing my new design;
FIG. 2 is a rear elevation thereof;
FIG. 3 is a top elevation thereof;
FIG. 4 is a bottom elevation thereof;
FIG. 5 is a side elevation thereof; and,
FIG. 6 is a right side isometric view thereof.
The dashed lines along the neckline and vertically through the front and rear more clearly depicted in FIGS. 1, 2, and 6 represent stitching upon the seams of a jersey. The broken lines in FIGS. 1, 2 and 6 are for illustrative purposes only to depict placement of team logos and player numbers and form no part of the claimed design.