Never really thought about this aspect of the NFL before, till I read this excerpt quoted at Freakonomics.
...the Economist ticked off the N.F.L.'s secrets to success, including: "The N.F.L. is also lucky - and its athletes much less so - because it is the most violent of the four sports. Since the average player does not last more than four years as a professional, labour strikes are difficult and the union is weak."
Back to listening to the hockey game. 3-3 Avs and Ducks.