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Self-Scouting Chicago’s 2018 Defense: Run & Pass Across the Field

| June 24th, 2019

Chicago’s defense was awesome in 2018. We all know this. They finished 3rd in yards, 1st in points, and 1st in turnovers. So let’s take the same approach we did with the offense and look at how they did defending different areas of the field. All statistics come from the NFL Game Statistics and Information System or Pro Football Reference’s Game Play Finder.

Run Defense

Chicago’s run defense was fantastic in 2018, finishing 1st in yards against, 4th in yards/carry allowed, and 1st in touchdowns given up. Now let’s break it down by different areas of the field to see if there were any weak links.

Here’s the data for Chicago’s rushing defense in 2017.

  • The line at the bottom is the line of scrimmage, runs are split into 7 zones, and attempts and yards per carry are listed for each zone, with ranks relative to the rest of the NFL in parentheses.
  • The height of the bar is proportional to yards per carry, and bars are colored green for top 10, red for bottom 10, and yellow for middle 12.
  • Note expected yards per carry varies by region, so the colors are relative to their peers in that region.


A few thoughts:

  • My goodness, that is beautiful. Their run defense was consistently among the best in the NFL pretty much everywhere. It didn’t matter where teams tried running on the Bears, they weren’t going far.

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Self-Scouting the 2018 Bears Offense

| May 13th, 2019

Chicago’s offense was generally mediocre in 2018. We all know this. They finished 21st in the NFL in yards per game, 9th in points scored (a number buoyed by a bunch of defensive touchdowns), and 20th in Football Outsiders’ DVOA. Those types of basic stats are easy for anybody to look up, and they can help paint an overall picture of how effective a unit performed.

They do not, however, tell a complete tale.

It can be useful to look deeper and see in what areas the Bears might have struggled, as well as where they might have done well. This can be useful to help identify specific areas of strength to build on going forward, as well as areas that need to be addressed through personnel and/or scheme changes.

In an effort to do this, I used the NFL Game Statistics Information System and Pro Football Reference’s Game Play Finder to look at Chicago’s offensive stats in a bit more detail. I broke down rushing and passing attempts by areas of the field to see where they target the most and how successful they are.

Rushing Attack

Chicago’s ground game was not very good in 2018. Though they finished 11th in rushing yards and tied for 7th in rushing touchdowns, they were 27th in yards/carry, indicating those first two totals were more a product of volume than a true sign of success. Now let’s break it down by different areas of the field.

Here’s the data for Chicago’s rushing attack in 2018.

  • The line at the bottom is the line of scrimmage, runs are split into 7 zones, and attempts and yards per carry are listed for each zone, with ranks relative to the rest of the NFL in parentheses.
  • The height of the bar is proportional to yards per carry, and bars are colored green for top 10, red for bottom 10, and yellow for middle 12.
  • Note expected yards per carry varies by region, so the colors are relative to their peers in that region.


Of course, yards/attempt can be clouded by when you’re running in a specific direction. A 2 yard run on 1st and 10 is bad, but it’s a positive outcome on 3rd and 1. To account for that, I also looked at success rate, which takes down and distance into consideration and categorizes every play as either a success or failure based on how well it helps you stay ahead of the chains (full explanation here). The following chart was pulled from Sharp Football and looks at the Bears’ success rate by direction. The numbers on the bottom indicate how that compares to the NFL average.



A few thoughts:

  • The rushing attack was particularly bad between the tackles, but that’s where the Bears had most of their runs. 54% of their rush attempts were between the tackles, and they were consistently among the least efficient teams in the NFL at those carries in terms of yards/carry. I’m not sure if this is due to the offensive line or Jordan Howard. Howard had 170 of Chicago’s 240 carries between the tackles, and he averaged 3.3 yards/carry on those runs. Note that they were decent in success rate relative to their NFL peers, which indicates they ran it between the tackles a lot in short-yardage situations.

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