The ornamental design for a noveltysportsfan, as shown and described.
FIG. 1 is a left, front perspective view of a novelty sports fan showing our new design;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a front elevational view thereof; and,
FIG. 4 is a rear elevational view thereof.
The element depicted by broken lines in FIG. 4 has been shown for the purpose of illustrating a portion of the novelty sports fan that forms no part of the claimed design.