We claim the ornamental design for a central portion of a racquet, as shown and described.
FIG. 1 is a front, side perspective view of a central portion of a racquet;
FIG. 2 is a front view of the central portion of the racquet of FIG. 1;
FIG. 3 is a side view of the central portion of the racquet of FIG. 1;
FIG. 4 is a top view of the central portion of the racquet of FIG. 1;
FIG. 5 is a bottom view of the central portion of the racquet of FIG. 1;
FIG. 6 is a cross sectional view taken on line 6-6 of FIG. 2; and,
FIG. 7 is a cross sectional view taken on line 7-7 of FIG. 2.
The ornamental design that is claimed is shown in solid lines in the drawings. The broken (dashed) lines shown in FIGS. 1 through 7 are included for the purpose of illustrating environmental elements only and form no part of the claimed design.