We claim the ornamental design for central side portions of a sports racquet, as shown and described.
FIG. 1 is a front perspective view of the central side portions of a sports racquet;
FIG. 2 is a front view of the sports racquet of FIG. 1;
FIG. 3 is a first side view of the sports racquet of FIG. 1;
FIG. 4 is a second side view of the sports racquet of FIG. 1 opposite the first side view; and,
FIG. 5 is a bottom view of the sports racquet of FIG. 1.
The ornamental design that is claimed is shown in solid lines in the drawings. The broken (dashed) lines shown in FIGS. 1 through 5 are included for the purpose of illustrating environmental elements only and form no part of the claimed design.