Before revision: Since 2014, horns have also been removed from the National-Federation-of-High-School-State-Associations URL This means that a coach is no longer allowed to request a horn to make a substitution on a ball out-of-bounds on the sideline.
After revision: Since 2014, horns have also been removed from the National-Federation ofHigh School State Associations URL This means that a coach is no longer allowed to request a horn to make a substitution on a ball out-of-bounds on the sideline.