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Drag and lift coefficients of recent FIFA world cup balls are examined. Wefit a novel functional form to drag coefficient curves and in the absence ofempirical data provide estimates of lift coefficient behaviour via aconsideration of the physics of the boundary layer. Differences in both thesecoefficients for recent balls, which result from surface texture modification,can significantly alter trajectories. Numerical simulations are used toquantify the effect these changes have on the flight paths of various balls.Altitude and temperature variations at recent world cup events are alsodiscussed. We conclude by quantifying the influence these variations have onthe three most recent world cup balls, the Brazuca, the Jabulani and theTeamgeist. While our paper presents findings of interest to the professionalsports scientist, it remains accessible to students at the undergraduate level.

An Aerodynamic Analysis of Recent FIFA World Cup Balls