I claim the ornamental design for a sports helmet, as shown and described.
FIG. 1 is a front, side perspective view of a sports helmet;
FIG. 2 is a side view of the sports helmet of FIG. 1;
FIG. 3 is a top view of the sports helmet of FIG. 1;
FIG. 4 is a front view of the sports helmet of FIG. 1; and,
FIG. 5 is a rear view of the sports helmet of FIG. 1.
The dashed/dotted lines that define the boundaries of the claim and the environmental structure shown in dashed lines form no part of the claimed design.