According to the NFL Players Association, CBS rejected their "Let Us Play" ad. The ad was to air on Saturday's "Texas vs. The Nation" all-star game.
I'm sure CBS will offer up some kind of BS excuse, but the real answer probably lies along the lines of 'We at CBS do not want to piss off the billionaire owners we pay billions of dollars to for the right to broadcast NFL games.'
I mean, when the Pro Bowl is netting an 8.6, the last thing CBS wants to do is bite the hand that feeds them.
So, because CBS won't air the ad, here it is: