soccer a brand new or substitute unpleasant play called because of the quarterback or a defensive development called by a linebacker on line of scrimmage as an adjustment on opposing side's development. Also known as automatic.
The act of or a case of switching the play at line of scrimmage by shouting out a new one.
whatever might heard.
what are heard.
a football play is changed by mouth after both teams have presumed their particular positions at the type of scrimmage