I figured this blog was probably a good location to search for an answer ...
Is there anyone, be it Football Outsiders or someone else - that has created a "percentage of total possible yards" stat? Basically, what I'm talking about is a statistic that measures how many yards an offense gains, compared to how many they could have gained.
A 5-drive example:
Team starts at own 20, scores a TD: 80 yards gained out of a possible 80;
Team starts at own 23, gets to opponent's 31 before a FG attempt: 46/77;
Team starts at own 3, gets to opponent's 49 before a punt: 48/97;
Team starts at opponent's 47, scores a TD: 47/47;
Team start's at opponent's 25, gets to opponent's 5 before a FG attempt: 20/25.
This would be a cumulative total of 241/326, or 73.9% (or .739 if you prefer). Kneel-downs to end a half would be discarded, of course.
I'd be curious as to how teams compare, and what a "normal" stat would be. It's a relatively simple stat but I'm still curious about it. A touchdown drive can (obviously) be anywhere from 1-99 yards, depending on how the defense and special teams set up the offense. Either way, the goal of the offense most of the time is to score a touchdown (other than when it's simply trying to burn up the clock).