"Several pointed me to a Wall Street Journal article from 2010 that studied four NFL broadcasts and determined that the average game features a grand total of 11 minutes of action. And, to be fair, the Wall Street Journal did a follow-up review of MLB broadcasts and found that the average baseball game features 14 minutes of action. Not much better, on the surface, though the article found that football had 67 minutes of standing around-time, about 21 minutes less than baseball. And in football, the ratio of inaction to action is approximately 10 to 1, according to WSJ. Sounds about right."