Major Rule Changes
The league passed major rule changes to encourage offensive scoring. In 1977 -- the last year of the so-called "Dead Ball Era" -- teams scored an average of 17.2 points per game, the lowest total since the 1940s.
- To open up the passing game, defenders are permitted to make contact with receivers only to a point of five yards beyond the line of scrimmage. This applies only to the time before the ball is thrown, at which point any contact is pass interference. Previously, contact was allowed anywhere on the field. This is usually referred to as the "Mel Blount Rule"
- The offensive team may only make one forward pass during a play from scrimmage, but only if the ball does not cross the line and return behind the line prior to the pass.
- Double touching of a forward pass is legal, but batting a pass towards the opponent's end zone is illegal. Previously, a second offensive player could not legally catch a deflected pass unless a defensive player had touched it. This is usually referred to as the "Mel Renfro Rule". During a play in Super Bowl V, Baltimore Colts receiver Eddie Hinton tipped a pass intended for him. Renfro, the Cowboys defensive back, made a stab at the ball and it was ruled that he tipped it ever so slightly (which he denied) into the arms of Colts tight end John Mackey, who ran for a touchdown. Later, this rule was also the one in question during the Immaculate Reception in 1972. But despite these two incidents, the rule change did not occur until this season.
- The pass blocking rules were extended to permit extended arms and open hands.
- The penalty for intentional grounding is reduced from a loss of down and 15 yards to a loss of down and 10 yards from the previous spot (or at the spot of the foul if the spot is 10 yards or more behind the line of scrimmage). If the passer commits the foul in his own end zone, the defense scores a safety.
- Hurdling is no longer a foul.
- A seventh official, the Side Judge, is added to the officiating crew to help rule on legalities downfield. The addition of 15 officials (one per crew) forced three-digit numbers to be used for the first time.
Read more about this topic: 1978 NFL Season
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