Figure 1From: Aerodynamic drag of modern soccer balls Photographs of soccer balls. (a) Adidas Roteiro: smooth surface with 32 pentagonal and hexagonal panels. (b) Adidas Teamgeist II: small protuberances with 14 panels. (c) Adidas Jabulani: small ridges or protrusions with 8 panels. (d) Adidas Tango 12: small grip texture with 32 modified panels.Back to article page