The ornamental design for the tennis bag, as shown and described.
FIG. 1 shows a side perspective view of my design for a tennis bag;
FIG. 2 shows a side view thereof;
FIG. 3 shows a right side view thereof, according to the orientation in FIG. 2;
FIG. 4 shows a left side view thereof, according to the orientation in FIG. 2;
FIG. 5 shows a top view thereof, according to the orientation in FIG. 2;
FIG. 6 shows a bottom view thereof, according to the orientation in FIG. 2;
FIG. 7 shows an opposite side perspective view, opposite FIG. 1 thereof; and,
FIG. 8 shows a perspective view thereof as shown in FIG. 7 with the bag being open.
The dark dashed lines in the drawings indicate zippers. The light dashed lines indicate the outline and various features of the bag. In both cases, the dashed lines are directed to environment and form no part of the claimed design. The dashed lines that appear on the pockets indicate stitching. These lines do form part of the claimed design.