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WELCOME to QuantCoach.com, the only site on the world-wide web that provides meaningful professional football coaching statistics. QuantCoach.com's revolutionary coaching statistics are derived from a peer-reviewed and generally accepted theory of competition known as Growth Theory. Veteran coach Bill Parcells once said, "If they want you to cook the dinner, at least they ought to let you shop for some of the groceries." But Growth Theory teaches us that success "springs from better recipes, not just from more cooking." In professional football, those "recipes" are the plays that coaches design. Simply, QuantCoach.com's coaching statistics separate the contribution of plays to pro football success from the contribution of players.

The JaMarcus Cable: Football's Mendoza Line

According to Wikipedia, the Mendoza Line is an informal term used in baseball as the threshold of incompentent offense. The standard is named after former shortstop Mario Mendoza and is achieved when a player's batting average falls below .200. It is often thought of as the offensive threshold below which a player's presence in the Major Leagues cannot be justified.

QC submits that the football equivalent should be known as the JaMarcus Cable. Here is QC's argument.

ESPN's Bill Simmons attempted to define a football equivalent of the Mendoza Line. Simmons wrote: "I wanted someone obscure; after all, nobody was more obscure than Mendoza. I wanted somebody bad. And I wanted a funny-sounding name. Well, who better than Jack Trudeau? Played for nine years, lost his first 11 starts, 42 TDs, 69 INTs, 103 sacks, never played in a playoff game, 63.3 lifetime QB rating. The Trudeau Line. Perfect."

Simmons effort was noble, but alas it is flawed as it commits a cardinal sin: It it treats football like baseball. As QC repeatedly emphasizes, in baseball, you can only change the players. In football, you can change the players, change the plays, or change both. Baseball is one dimensional and, therefore, a one-dimensional line is perfectly appropriate as the measure of incompetence.

Obviously, in baseball, offense is an individual activity. One of the reasons that Mario Mendoza was such an incompetent offensive producer is that he had to produce all by himself. While at the plate, neither his manager nor his teammates could help him. Football is different. In football, offense is never an individual activity. Rather, football offense is always a collective activity in which success is determined by the combined efforts of coaches and players. In football, an offensive player never has to produce all by himself. Joe Montana always had Bill Walsh and Jerry Rice to help him on every play.

Football is three dimensional. Thus, a three-dimensional standard that is similar to line, such as a cable, is necessary. A cable is two or more wires or ropes running side by side and bonded, twisted or braided together to form a single assembly. In football, a coach and a quarterback are bonded, twisted or braided together to form a single assembly. Thus, a cable is the perfect standard of incompetence for football.

QC's player productivity statistic (ðHY) defines how productive NFL players are on the football field. Through 12 weeks of the 2009 season, NFL teams whose player productivity has been below 2.00 are 13-51, a .203 winning percentage. In other words, NFL teams that produce at 2.00 or lower win about as often as Mario Mendoza got a base hit. Thus, 2.00 player productivity is an appropriate threshold of incompentent football offense. It is the offensive threshold below which a quarterback's presence on the field cannot be justified.

In 2009, no coach and quarterback combination has produced below this standard more consistently than Oakland's eponymous Tom Cable and his quarterback, JaMarcus Russell. Before Cable benched Russell, the Raiders were 2-7. In those 9 games, Oakland's offensive player productivity was below the standard 7 times.

For all of these reasons, the football equivalent of the Mendoza Line henceforth shall be known on QuantCoach.com as the JaMarcus Cable. (ARCHIVES; ARCHIVES2; ARCHIVES3).

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