Football Outsiders has interesting stats, if anyone is interested in stats. Basically, they adjust yards by field position and situation. 3 yard gain is worth more on 3rd and 7 than it is on 3rd and 2 (from the defensive side), for example. Currently, FO has us as the 18th ranked defense in the league--23rd against the run, 15th against the pass. At the end of last year the defense ranked 31st--30th against the run, 28th against the pass. So, halfway through the season, we've improved from the embarrassing defense of 2013 . It's noteworthy that we fell from no. 10 to no. 18 following the Saints game, so things can change rapidly at this point in the season.
Our defensive line is ranked 26th against the run, 18th against the pass. We are 10th in the league on runs around our L end; 21st over L tackle; 21st up the middle; 27th over R tackle; and 24th around R end.
Against types of receivers, it's the tight ends and running backs who we are worst in defending against the pass: against #1, #2, and other wide receivers we rank 13, 10, and 11th. Against TE 23rd, running backs 24th.
Defensive line and linebacking are our main problems on defense. Same thing on offense, where our line ranks 20th in run blocking and 23rd in pass protection. In spite of this our offense is currently ranked 5th, thanks to Rogers.
Good teams are built from the lines up, not the other way around.