Pro football doesn't just produce cash for the NFL. Local economic activity generated by a single NFL game is estimated at $20 million to $21 million. Over eight home games -- excluding preseason and playoffs -- that's $160 million per year per market and $5.1 billion total earned by peripheral businesses.
Says Dan Neely, CEO of Networked Insights: "The NFL is like Procter & Gamble (PG). There's the holding company, the core operation, but then each brand has its own team and world of revenue. Like Tide: that's a P&G product but within that there are different types of Tide and a number of people that make money from it. So the $9.3 billion pie just scratches the surface and doesn't get into how much money is spent around stadiums, merchandise, agents, all the way down to mom-and-pop shops."
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Last updated March 09 2011: 12:45 PM ET