American Football Diagram - Structure and Seam Design #1352842 (License: Personal Use)

This diagram illustrates the classic prolate spheroid geometry of an American football, emphasizing the curved black outer contour and intersecting red seam lines that simulate lacing. The red curves represent the longitudinal stitching paths critical for grip and aerodynamics during throws and kicks. The minimalist style highlights structural symmetry without distracting textures or branding.

Used in sports science articles, coaching guides, product design pages, or educational content explaining football physics and manufacturing. Matches user intent for visual learning, technical reference, or infographic sourcing.