The sacks just ain't comin'.

One of the main issues the Pittsburgh Steelers faced heading into the 2013 season was the issue of pressure on opposing quarterbacks. After a combined 72 sacks from 2011 to 2012 (35 in '11 and 37 in '12), the Steelers ranked in the middle of the NFL in terms of production.

The 34 they notched as a defense in 2013 is the lowest total the team has had in 23 years, and that was among the bottom quarter of the league.

What gives?

An argument can be made the Steelers took one step back in 2013 in order to take two steps forward in 2014 and beyond. Jarvis Jones was selected with the 17th overall pick, and, opposite LaMarr Woodley, battled with Jason Worilds for the team's starting right outside linebacker spot.

By the end of the season, Woodley was on injured reserve again, Worilds had clearly beaten out Jones but was on the defensive left side.

Another factor was the absence of a veteran inside linebacker opposite Lawrence Timmons. The fire blitz so frequently used in Dick LeBeau's defense wasn't called as often as it usually does, and Timmons' sack numbers declined as a result.