Wrapping up our look at returning players and new veterans on defense, today we’re going to explore stopping the run.
This can be difficult to quantify, because much of what goes into run stopping doesn’t get measured. When Eddie Goldman holds his own against two blockers, he frees up a linebacker to make the tackle, but nothing Goldman did there shows up on a stat sheet. So I want to be clear from the start that this is not going to be a perfect science, and I make no claims that it is.
However, Pro Football Focus (PFF) does track some data that can give us an idea of how often a defender is directly involved in stopping a run play. We’ll look at basic metrics that are fairly self-explanatory, like how often a player makes a run tackle or misses a tackle, but also some more advanced data including how far downfield the average run tackle they make is.
One unconventional stat PFF uses that I want to briefly discuss is a “run stop.” PFF defines this as a solo tackle that counts as a “win” for the defense. I can’t find anything definitively saying what makes a play a “win,” but you can imagine this is probably similar to success rate, where it keeps the offense from picking up a certain % of the yards needed for a 1st down. In other words: a defender made a tackle to keep the run short and force the offense behind the chains.
I will examine every Bears defender who had at least 200 run defense snaps last year, whether in Chicago or somewhere else. This allows for a large enough individual sample size that the values have some meaning, but also a large enough sample size for comparing players from a position to their peers. The 200 snap threshold gave a sample of 74 interior defensive linemen (2.3/team), 52 edge defenders (1.6/team), 66 linebackers (2.1/team), 75 cornerbacks (2.3/team), and 70 safeties (2.2/team). That adds up to 10.5 defenders/team, or roughly those who played starter-level snaps.
Let’s start with a look at the defensive line, where the Bears return Angelo Blackson and added Justin Jones in free agency. The table below shows how they both fared in a variety of run-stopping metrics last year, as well as their rank compared to 74 interior defensive linemen who played at least 200 run snaps. To give a broader frame of reference, the best, average, median, and worst values among that 74-player sample are also provided for each statistics. Categories highlighted in green indicated the player was in the top 25% relative to their peers, while red indicates the player was in the bottom 25%.
A few thoughts:
- Angelo Blackson seems like a decent enough, if not great, run defender. He’s not overly good or bad in any of the areas. His missed tackle rate is a little higher than you would like to see, so hopefully that can improve a bit going forward.
- Justin Jones is very active in run defense, as evidenced by his high amount of run-defending tackles. However, he struggles with missed tackles, and very few of his tackles count as “wins” for the defense, which means they’re happening farther down the field than you would like.
Let’s switch gears and examine the edge rushers now, where the Bears have three notable players: returnees Robert Quinn and Trevis Gipson and newly signed Al-Quadin Muhammad. The table below shows their performance against the run in a variety of metrics, including their rank compared to 52 positional peers.
Read More …