<P> Historically the CFL ball was slightly larger, both because of slightly bigger specifications, but also because CFL manufacturers tended to make balls at the larger end of the allowed tolerances as opposed to NFL manufacturers who built balls to the smaller end . However, the CFL updated its specifications in 1985 . </P> <P> According to the current standards the regulation size for a Canadian Football League football is specified as: short circumference from 20 ⁄ to 21 ⁄ inches (530 to 537 mm); long circumference from 27 ⁄ to 28 ⁄ inches (705 to 718 mm). </P> <P> The regulation size for a National Football League football is specified as: short circumference from 21 to 21 ⁄ inches (533 to 540 mm); long circumference from 28 to 28 ⁄ inches (711 to 724 mm). </P> <P> Despite the fact that the CFL rules allow for a smaller legal ball and the NFL rules allow for a larger legal ball, there is a common misconception among media, fans, and even players that the current CFL ball is bigger . Some professional quarterbacks have stated that they notice a difference in size . </P>

What are the differences between cfl and nfl