Which do you think is a better situation for a defense to be in? I'm not talking about where a team is in fieldgoal range. Say the offense is at or near mid field and have 5 yard penalty on an incomplete pass like the screen with an illegal man downfield last night on the Redskins. For the past 30 years, I've been watching football it seems like push them back 5 yards was the answer but in todays NFL with the game set up for passing is that really the right answer anymore? What do you think?
So on avg the 1st and 15 is roughly equivalent to the 2nd and 10.
I haven't been able to come up with actual data, however. I have seen research that said that 2nd and 5 is roughly equivalent to 1st and 10 in terms of first down conversion probability.