I claim the ornamental design for a football-shaped grill, as shown and described.
FIG. 1 is a perspective view of a football-shaped grill showing my new design, wherein the vent openings are shown closed;
FIG. 2 is a perspective view thereof with the vent openings shown partially opened;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left side elevational view thereof;
FIG. 8 is a right side elevational view thereof; and,
FIG. 9 is a top plan view thereof with the grill lid shown pivoted open.
In the drawings, the broken lines are for illustrative purposes only and form no part of the claimed design. In FIG. 2, the stippling is for shading purposes.