The ornamental design for a legsystem for a sports training apparatus, as shown and described.
FIG. 1 is a perspective view of a leg system for a sports training apparatus having my new design. The broken lines shown on the lower central structure in FIGS. 1–4 are included for the purpose of illustration portions of the article that form no part of the claimed design; and the broken lines overlying the leg system in FIG. 1 represent unclaimed environmental structure.
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevation view thereof, right and left side and rear elevation views each being identical thereto; and,