RT @mashable Hard to remember ever not having the yellow first-down line on @NFL broadcasts. How it came to be: http://on.mash.to/1bM8B0U
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Remember when I thought it was real? MT
@mashable There wasn't always a yellow first-down line on@nfl broadcasts. http://on.mash.to/1bM8B0UThanks. Twitter will use this to make your timeline better. UndoUndo
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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