The ornamental design for a sportsballfishingjig, as shown and described.
FIG. 1 is a top plan view of the sports ball fishing jig showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a side elevation view, with the opposite side being a mirror image thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof; and,
FIG. 6. Is a top, front and side perspective view thereof.
The broken lines showing portions of the sports ball fishing jig are included for illustrating environment only and form no part of the claimed design.