The design consists of the features of shape, ornament, pattern and configuration of the entire bag shown in the drawings.Figure 1a is a top view of the design showing a zipper along the top seam of a football-shaped bag;Figure 1b is right side view of the design according to Figure 1a;Figure 1c is left side view of the design according to Figure 1a;Figure 1d is bottom view of the design according to Figure 1a;Figure 2a is a top view of a first variant of the design showing a zipper along the left seam of a football-shaped bag;Figure 2b is right side view of the variant according to Figure 2a;Figure 2c is left side view of the variant according to Figure 2a;Figure 2d is bottom view of the variant according to Figure 2a;Figure 3a is a top view of a second variant of the design showing a zipper along the bottom seam of a football-shaped bag;Figure 3b is right side view of the variant according to Figure 3a;Figure 3c is left side view of the variant according to Figure 3a;Figure 3d is bottom view of the variant according to Figure 3a;Figure 4a is a top view of a third variant of the design showing a zipper along the top seam of a football-shaped bag with a velcro closure showing the football strings;Figure 4b is right side view of the variant according to Figure 4a;Figure 4c is left side view of the variant according to Figure 4a;Figure 4d is bottom view of the variant according to Figure 4a;Figure 5a is a top view of a fourth variant of the design showing a velcro strip along the top seam of a football-shaped bag;Figure 5b is right side view of the variant according to Figure 5a;Figure 5c is left side view of the variant according to Figure 5a;Figure 5d is bottom view of the variant according to Figure 5a;Figure 6a is a top view of a fifth variant of the design showing a velcro stip along the left seam of a football-shaped bag;Figure 6b is right side view of the variant according to Figure 6a;Figure 6c is left side view of the variant according to Figure 6a;Figure 6d is bottom view of the variant according to Figure 6a;Figure 7a is a top view of a sixth variant of the design showing a velcro strip along the right seam of a football-shaped bag;Figure 7b is right side view of the variant according to Figure 7a;Figure 7c is left side view of the variant according to Figure 7a;Figure 7d is bottom view of the variant according to Figure 7a;Figure 8a is a top view of a seventh variant of the design showing a velcro strip along the top seam of a football-shaped bag with a velcro closure showing the football strings;Figure 8b is right side view of the variant according to Figure 8a;Figure 8c is left side view of the variant according to Figure 8a;Figure 8d is bottom view of the variant according to Figure 8a;Figure 9a is a top view of a eighth variant of the design showing a spring steel trap along the top seam of a football-shaped bag;Figure 9b is right side view of the variant according to Figure 9a;Figure 9c is left side view of the variant according to Figure 9a;Figure 9d is bottom view of the variant according to Figure 9a;Figure 10a is a top view of a ninth variant of the design showing a spring steel trap along the top seam of a football-shaped bag with a velcro closure showing the football strings;Figure 10b is right side view of the variant according to Figure 10a;Figure 10c is left side view of the variant according to Figure 10a;Figure 10d is bottom view of the variant according to Figure 10a.