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Advanced Defensive Stats: Missed Tackles

| June 29th, 2021

Continuing our tour of advanced statistics about Chicago’s 2020 defense, today I want to take a look at missed tackles.

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The Bears excelled in the missed tackle area last year, finishing with only 89, the 6th lowest mark in the NFL. To go more in-depth, let’s hone in on how individual players and units contributed to that, building on work I did last offseason. The setup here is fairly simple:

  • Split players into positions (DL, LB, and DB).
  • Compare their missed tackle rates to how everybody else around the NFL fares at their position.

You can see the full data here, but generally the positional medians for missed tackle rates are 10.8% for DB, 9.5% for LB, and 8.5% for DL. With that in mind, let’s look at how Chicago’s defense did last year.

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Defensive Backs

The table below shows all Chicago defensive backs in 2020, as well as how they did overall as a unit. Players with 20 or more tackle attempts were ranked based on how they fared relative to all NFL DBs.



A few thoughts:

  • Eddie Jackson continued to struggle with missed tackles for the 3rd year in a row. It’s not his strength, but that’s fine if he continues to excel in coverage, which is far more valuable (spoiler alert for upcoming article: he did not excel in coverage in 2020).
  • Tashaun Gipson struggled with missed tackles in both 2018 and 2019, but was excellent here in 2020. The Bears will need him to continue to excel in that area given the tackling question marks around him.
  • Kyle Fuller and Jaylon Johnson were both awful with missed tackles in 2020. That continued a long-time pattern for Fuller, but was a bit of a surprise for Johnson, who rarely missed tackles in college. However, I should note that 6 of his 9 missed tackles came in the last 4 weeks as he played through a shoulder injury before it shut him down for the year. In his first 9 games, he had a missed tackle rate of only 10%, which is around league average.

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Advanced Defensive Stats: Missed Tackles

| July 1st, 2020

I’ve written quite a bit about Chicago’s offense so far this offseason, but not as much about the other side of the ball. I want to change that in the next series of articles, using advanced defensive statistics from Pro Football Reference (PFR). We’ll start today by looking at missed tackles.


Baseline Rates

Let’s start by establishing a baseline for what is a normal rate of missed tackles.

I compiled all missed tackle stats from the PFR database for 2018 and 2019 (the only 2 years it has) and sorted them by position. In order to compare starters to starters and avoid rates skewed by backups, I assumed a base nickel package of 4 defensive linemen (DL), 2 linebackers (LB), and 5 defensive backs (DB). For all 32 teams over a 2 year span, this would mean roughly 256 DL, 128 LB, and 320 DB. This gave thresholds of 20 tackles for DL, 60 for LB, and 40 for DB.

Looking at those sample sizes, you can see the spread of missed tackle rates in the table below for each position group.

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