Requirements and Disadvantages
The West Coast offense requires a quarterback who throws extremely accurately, and often blindly, very close to opposing players. In addition, it requires the quarterback to be able to quickly pick the best one of five receivers to throw to, certainly much more quickly than in previously used systems. Often, the quarterback has no time to think about the play and must act robotically, executing the play exactly as instructed by the offensive coordinator, who calls the plays for him.
This is in contrast to the roles quarterbacks were required to perform in other systems, which were to be an adept game manager with a strong arm. Many people reasoned that Johnny Unitas, a strong-armed field general would not have fared well in being subservient to the offensive coordinator, and that his long but sometimes wobbly passes would not have worked in the West Coast system. The West Coast offense caused a split still evident today among quarterbacks; those who were more adept at the West Coast style: Joe Montana, Steve Young, Brett Favre, Tom Brady, Matt Hasselbeck; and those more in tune with the old style: Dan Marino, and Jim Kelly. Rich Gannon is a good example of a quarterback who fared better in one system than the other. Gannon struggled in the old style system but found great success with the Oakland Raiders and the West Coast system run by head coaches Jon Gruden and Bill Callahan.
The West Coast offense requires sure-handed receivers who are comfortable catching in heavy traffic, and the system downplays speedy, larger receivers who are covered easily in short yardage situation. One result has been the longevity of receivers in the West Coast system such as Jerry Rice, because familiarity with the system and clear signalling is of greater importance than systems that require a receiver to "stretch the field" where any loss of speed is a major liability. "WCO" systems also rely on agile running backs that catch the ball as often as they run. Roger Craig was a leading receiver for the 49ers for many years and was a 1,000 yard rusher and 1,000 yard receiver in the 1985 season. Finally, receivers must follow precise, complicated routes as opposed to innovation, making meticulous, intelligent players more valued than independent, pure athletes. Jerry Rice's unique skill-set made him a reliable and durable asset in both Walsh's and Seifert's versions of the West Coast Offense, and he was able to break numerous NFL receiving records over the course of his career. Rice, who earned induction into the Pro Football Hall of Fame in 2010, recorded 1,549 receptions, 22,895 receiving yards, and 208 total touchdowns, more than any other NFL player in all three categories.
Another aspect of the West Coast offense is the use of fast running quarterbacks. In blitz or short-yardage situations, many of the West Coast offense's strengths are negated by defenses blocking running and passing lanes. A running quarterback can compensate by acting as a runner himself, paralyzing an overly aggressive defense. Quarterbacks such as Randall Cunningham and Michael Vick have been successful runners in this offense, as well as other notable scrambling quarterbacks such as Jake Plummer, Donovan McNabb and Aaron Rodgers.
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