The ornamental design for a sportsbelt, as shown and described.
FIG. 1 is a perspective view of a sports belt showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a rear elevational view thereof.
The broken line showing of the end portions of the belt strap, the buckle and the holes in FIG. 1-6 is included for the purpose of showing environmental structure and forms no part of the claimed design.