Types of Football Defenses
The Dallas 4-3 defense uses the scheme cover four or four across in the secondary. Of course, this scheme puts extra pressure on the two cornerbacks, who are expected to be able to take the opposition’s two best receivers man-to-man and shut them down without any help.
In the Dallas 4-3 defense, the safeties also can creep up toward the line of scrimmage to provide support against running plays. Basically, this defense allows the safeties to cheat, to overplay one aspect of the offense when they anticipate the play correctly.