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A Closer Look at WRs, Part I: Total Usage, Man vs. Zone

| July 5th, 2023

All of a sudden, the Bears’ WR room looks fairly solid, as they return Darnell Mooney, their leading receiver over the last two years, added Chase Claypool in a midseason 2022 trade, and traded for DJ Moore from Carolina this offseason. As you can see in the table below, this gives Chicago three WRs who put up starting-caliber (top 96, or 3 per team) production in 2022.



Of course, volume isn’t everything.

It is also worth exploring how efficient a player was with the targets they received. The table below shows some basic efficiency stats for Moore, Mooney, and Claypool in 2022, as well as ranks relative to the 80 NFL WRs who saw at least 50 targets. The spread of outcomes for those 80 players is also shown to give more context overall. Any areas where a player ranked in the top 25% are highlighted in green, while the bottom 25% are highlighted in red.



A few thoughts:

  • At first glance, the efficiency for all three players looks pretty poor. Mooney was around average in all three metrics, while Moore had a low catch percentage but was otherwise fine and Claypool was bad across the board. It’s important to keep in mind, however, that all three were in bad passing offenses last year, largely due to poor quarterback play.
    • Moore spent his season catching passes from Baker Mayfield, Sam Darnold, and PJ Walker. As a team, the Panthers finished 31st in completion percentage, 15th in yards/attempt, and 27th in passer rating.
    • Mooney spent 2022 in Chicago catching passes from Justin Fields, Trevor Siemian, Nathan Peterman, and Tim Boyle. The Bears were 30th in completion percentage, 21st in yards/attempt, and 26th in passer rating, so within that context producing average efficiency overall is a big win for Mooney. As we saw during Fields in Focus, Mooney was one of only two competent targets the Bears had last year, and there was definitely a clear split in efficiency throwing to Mooney/Kmet and everybody else.
    • Claypool split his season between Chicago and Pittsburgh, where he caught passes from Mitchell Trubisky and Kenny Pickett. The Steelers finished 19th in completion percentage, 28th in yards/attempt, and 30th in passer rating.

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Projecting Cole Kmet’s Contract Extension

| June 14th, 2023


In the last two days, we’ve looked in depth at tight end Cole Kmet’s production, and found that he’s not going to be a guy you build your passing attack around, but has proven he’s a solid secondary receiving weapon who fits well in Chicago’s current offense. We also saw earlier this offseason that Kmet is a solid run blocker, which the Bears clearly value in this scheme.

Since he has finished three years in the NFL, Kmet is eligible for an early contract extension that could lock him in to Chicago through his prime. Ryan Poles stated earlier this offseason that he would be looking to sign a few key young players to extensions before the season starts, and Kmet seems like the most obvious candidate there.

With that in mind, let’s take a look at the tight end market to see what Kmet’s deal could end up looking like.


Favorable Comparisons (Kmet)

Let’s start by looking at contracts Cole Kmet’s camp will point to as deals signed by comparable players. The table below shows five such deals signed by tight ends in the last two years.

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A Tight Look at the 2023 Tight Ends, Part II: Depth, Downs & Dimensions

| June 13th, 2023

In Part I, we saw that both Cole Kmet and Robert Tonyan are used more against zone than man coverage, and today we’re going to look at their involvement in the passing game through a number of other lenses.


Targets by Depth

Let’s start by looking at how frequently and effectively Chicago’s tight ends were targeted at various depths of the field. The table below shows their stats compared to 29 NFL tight ends with 50+ targets in 2022. Areas where they ranked in the top 25% are highlighted in green, while areas in the bottom 25% are highlighted in red. All data is from Pro Football Focus (PFF). 

(Side note: sorry if the formatting is poor for the graph. You can click on it to see it in a new window in full if it’s not showing up right for you.)



A few thoughts:

  • The first thing that stands out is that both Kmet and Tonyan were heavily targeted on screen passes behind the line of scrimmage. Kmet in particular was good at converting these into yards by running well with the ball after the catch, a skill that he also showed in 2021 and the Bears did a good job of utilizing more frequently in 2022.
  • Looking at Kmet beyond the line of scrimmage, he was rarely targeted in the intermediate range, but he was highly productive there when targeted. This closely matches Justin Fields’ passing profile in 2022, so hopefully Fields can target that area more aggressively in 2023 and Kmet can benefit.
  • Part of that improving talent comes from Tonyan, who excelled in the short game but didn’t do much down the field.
    • The downfield struggles are a distinct change from 2020, when 35% of Tonyan’s targets were at least ten yards downfield and he caught 75% of those passes for 16.1 yards/target.
    • Like we said in Part I, 2023 will be year two after his knee injury, which is when many players return closer to their pre-injury norms, and 2020 (pre-injury) Tonyan was a significantly better player than the 2022 version.

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A Tight Look at the 2023 Tight Ends, Part I: Total Usage & Man v. Zone

| June 12th, 2023

All of a sudden, the Bears’ TE room looks fairly stacked, as they return Cole Kmet – who led the team in receiving in 2022 – and added veteran Robert Tonyan as their TE2. As you can see in the table below, this gives Chicago two TEs who put up starting-caliber volume in 2022.



Of course, volume isn’t everything.

It is also worth exploring how efficient a player was with the targets they received. The table below shows some basic efficiency stats for Kmet and Tonyan in 2022, as well as ranks relative to the 29 NFL tight ends who saw at least 50 targets. The spread of outcomes for those 29 players is also shown to give more context overall. Any areas where a player ranked in the top 25% are highlighted in green, while the bottom 25% are highlighted in red. The table also includes Kmet’s stats from 2020 and 2021 to see how his efficiency has changed throughout his career.



A few thoughts:

  • Kmet saw his volume drop from 93 to 69 targets in 2022, but his efficiency skyrocketed. This shows both Kmet’s growth as a player and a new offensive scheme that aligns with his skill set.
    • As we saw when looking at Jusin Fields earlier this offseason, the Bears used play action far more in 2022 than they did in 2021, and that deception was able to help free Kmet and mask his athletic deficiencies as a route runner. Unfortunately, I don’t have access to stats on play action for receivers, but this film study with Kmet shows a number of his big plays from 2022 coming when he was uncovered due to play action.
    • With the addition of DJ Moore this offseason, plus the return to health of Chase Claypool and Darnell Mooney, it’s reasonable to assume Kmet will be farther down the receiving order in 2023. He might see a decrease in total targets for a 2nd year in a row, but an efficient secondary weapon in the passing game can be extremely valuable.

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Fields in Focus (8/8): Final Takeaways and the Future Outlook

| May 12th, 2023

Today is the last of eight articles taking a closer look at Justin Fields’ 2022 season.


Lessons Learned

Let’s start with a brief recap of some of the main takeaways from the series so far:

  • Fields experienced moderate growth as a passer from his rookie season but did not make “the leap” that you typically see from great quarterbacks in year two.
  • Fields shows very clear strengths (throwing the ball deep, running) and weaknesses (short, quick passes and taking too many sacks). This leads to plenty of big plays but also far too many negative ones.
  • Evaluating Fields becomes difficult due to the poor supporting cast around him.
    • This especially showed up with the offensive line in the pressure data. Fields is always going to be a quarterback who holds the ball for a bit longer than most, meaning that he is particularly dependent on a quality offensive line to make that style work.
    • This showed up most clearly with the pass catchers when looking at how bad Chicago’s non-Mooney WRs were against man coverage. Nobody else was able to get open, and Chicago’s entire offense suffered as a result.

Year Three Growth

Now let’s look at how Fields compares to a trio of recent QBs who had year three breakouts: Jalen Hurts, Tua Tagovailoa, and Josh Allen. The table below shows their statistics in year two vs. year three of their careers, and Justin Fields’ data for year two in 2022.



A few thoughts:

  • Looking at the other three QBs, I don’t think Tua Tagovailoa is a very good comparison. He doesn’t use his legs much and is generally a shorter passer with a high completion percentage. His year three breakout was driven by a new coach/offense and pushing the ball deeper (his average target depth increased from 7.0 yards to 9.6 yards), and none of that is related to Fields.
  • Hurts and Allen, on the other hand, are pretty similar stylistically to Fields in that they hold the ball longer and push the ball down the field, which generally results in a lower completion percentage. Their year two stats line up pretty well with Fields’, with the exception of Fields being sacked significantly more.
    • Improvement for both in year three coincided with them taking more of the easy stuff. According to PFF, Allen and Hurts both increased their rate of short throws (54% to 58% for Allen, 52% to 61% for Hurts) and decreased their deep shots (15% to 13% for Allen, 16% to 13% for Hurts). They didn’t completely change their play style but became a bit more willing to take the easy yards underneath, which helped them complete more passes, gain more yards per attempt, and avoid more interceptions. Fields had a similar year 2 passing profile (55% passes behind the line or short, 16% deep), and he should look to make those same changes in 2023.
    • Hurts and Allen both saw their rushing efficiency decrease in year three compared to year two, which is also a reasonable expectation for Fields after his rushing came close to setting NFL records last year. This study found that running QBs often see passing efficiency improve in year three, and that these QBs become less dependent on needing to use their legs as they become more effective through the air.

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Fields in Focus (7/8): Man vs. Zone

| May 11th, 2023

Today is the seventh of eight articles taking a closer look at Justin Fields’ 2022 season.

All data comes from Pro Football Focus (PFF) unless otherwise noted, and Fields’ stats are only from week 5 on, as was explained in part one of this series.


General Overview

Let’s start with a general look at how Fields performed against man and zone coverage in 2022.

Before we get into the data, a quick caveat: PFF doesn’t publicly show this data by QB, but instead by pass catcher. I manually compiled it team by team to do comparisons, but it doesn’t include all throws. This accounts for roughly 90% of Fields’ total pass attempts. For the Bears, this data is only for the 11 games Fields started and played the majority of from Week 5 on.

With that said, the table below shows how Fields fared throwing against both man and zone compared to the NFL average (I couldn’t do the usual NFL high/medium/low since this wasn’t split up by QB). YBC = yards before catch, YAC = yards after catch.



A few thoughts:

  • First, the Bears saw a bit more zone coverage than was typical in the NFL last year. That makes sense given Fields’ running abilities, as zone will leave more defenders watching the QB and able to flow to the ball if he takes off.
  • Looking at the NFL averages, you can see that zone coverages generally give up more completions and yards per attempt but allow fewer touchdowns and result in more interceptions.
    • That was especially true for Fields, who threw more interceptions than touchdowns against zone but picked up an obscene touchdown rate against man coverage. I am going to tentatively credit the touchdowns to a good play caller who was able to scheme players open in the red zone, considering the struggles elsewhere against man coverage.
  • In terms of gaining yards efficiently, Fields’ yards/attempt mark was generally a bit better than typical against zone and a bit worse than typical against man.
    • The zone efficiency was largely driven by pushing the ball downfield, as his yards before catch mark was about 1.5 higher than the NFL average.
    • In man coverage, Fields’ average completion was actually shorter than the NFL average, which is a bit surprising considering Fields likes to throw the ball deep quite a bit. I would guess that speaks to Fields’ targets having trouble getting open down the field against man coverage, which would force more checkdowns.

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Fields in Focus (6/8): The Explosive Plays

| May 10th, 2023

Today is the sixth of eight articles taking a closer look at Justin Fields’ 2022 season.

All data comes from Pro Football Reference‘s Game Play Finder, unless otherwise noted.


Explosive Plays

I’ve been tracking explosive plays for several years because I found they have a strong correlation to total points scored by the offense. Therefore, they’re an important indicator of offensive success; by and large, good offenses produce more explosive plays.

The exact criteria I use for explosive plays are runs that gain 15 or more yards and passes that gain 20 or more yards. This is borrowed from ESPN Stats.

The table below shows how the Bears ranked in explosive runs, explosive passes, and total explosive plays compared to the other 31 NFL teams last year. Areas where they were in the top 25% are highlighted in green, while those in the bottom 25% are highlighted in red.



A few thoughts:

  • Fans might remember that Justin Fields missed two games with injury last year, and these numbers change ever so slightly if you look only at the 15 games Fields started and extrapolate those to a 17-game season. That would bring them to 73 total explosive plays, which would rank 16th.
    • Most of this series has been looking at Fields from week 5 on only, since there was such a noticeable change in his performance after a dismal first month. Focusing on those games would slightly bump the Bears up to 74 explosive plays (15th) when extrapolated to a full season.
  • These numbers are not different enough to change the general conclusions. The Bears had one of the most explosive rushing attacks in the NFL but were one of the least explosive passing games. This is probably not a surprise to any Bears fans who watched the games last year. Overall, that worked out being around average in total explosive plays.

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Fields in Focus (5/8): Performance Under Pressure

| May 9th, 2023

Today is the fifth of eight articles taking a closer look at Justin Fields’ 2022 season.

All data comes from Pro Football Focus (PFF) unless otherwise noted, and Fields’ stats are only from Week 5 on, as was explained in part one of this series.


Under Pressure

We’ve already seen that Fields was under pressure very frequently, so how did he hold up when that happened?

The table below shows how Fields performed in a wide variety of statistics when kept clean (blue) vs. pressured (orange), and also includes Fields’ rank out of 33 total NFL QBs who had at least 240 pass attempts. Information on the spread of all NFL QBs is also provided for each stat. Cells highlighted in green indicate Fields was among the top 25% of QBs in this category, while those in red indicate Fields was in the bottom 25% of QBs. A further explanation of big time throws and turnover worthy plays was given in the play action article; generally, more big-time throws is good, and more turnover-worthy plays is bad.



A few thoughts:

  • Fields actually performed quite well under pressure compared to his peers, as his yards/attempt and big time throw rate were both among the best in the NFL.
    • This was a real area of growth from his rookie season, when Fields struggled tremendously under pressure. That could point to Fields starting to adjust to the speed of NFL defenses.
    • This matches what we saw in the time to throw article. Fields is at his best when he can hold the ball and look to push it downfield. Pressured throws will of course be slower developing plays that go farther downfield. The average throw time without pressure is 2.4 seconds, while that jumps to 3.5 seconds on pressured passes, and the average target depth increases from 7.6 to 10.7 yards.
    • However, the downside of that is the high turnover worthy play rate and the huge number of sacks (which aren’t shown here because you can’t be sacked if you aren’t pressured), just like with the quick vs. slow breakdown.
  • On the flip side, Fields needs to perform better when kept clean. His yards/attempt mark was actually worse in a clean pocket compared to when he was pressured, which is very bizarre considering the NFL average is an improvement of almost two yards/attempt.
    • This is a huge change from his rookie year, when he was among the best passers in the NFL in a clean pocket. I find that a bit confusing, as performance from a clean pocket is fairly stable from one season to the next.
    • This likely has significant overlap with the difficulties in the quick-hitting game that we saw earlier in this series. Most of those plays are going to be in the clean category, and Fields was really bad there.
    • I also wonder how much Chicago’s abysmal WR group factored into this. Fields’ clean throws came at an average of over 2.7 seconds, the longest in the NFL and an increase of from the 2.6 seconds he saw as a rookie, but his average target depth on these passes dropped by over 2 yards from his rookie season. Could it be that nobody was quickly getting open down the field, forcing Fields to hold the ball a tick longer and still dump it off?

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Fields in Focus (4/8): Fields Under Pressure

| May 8th, 2023

Today is the fourth of eight articles taking a closer look at Justin Fields’ 2022 season.

All data comes from Pro Football Focus (PFF) unless otherwise noted, and Fields’ per-snap stats are only from Week 5 on, as was explained in part one of this series. (Volume stats are still season-long for an easy comparison to other QBs.)


Pressure Frequency

Like we saw in his rookie season, Fields was under heavy pressure in 2022. PFF had him pressured on 45% of drop backs, the worst rate of 33 qualified QBs and 12% higher than the NFL average. Pro Football Reference, which is more selective with what they consider a pressure, had him at a 27% pressure rate, the 3rd worst mark in the NFL (range from 13% to 29%, with an average of 21%, quick side note that this is full season, not just from week 5 on).

The table below shows how frequently PFF blamed pressure on each position. Fields’ stat is provided, and his rank compared to the other 33 QBs, as well as the range of the other qualifying QBs.  Cells where Fields ranked in the top 25% are highlighted in green, while cells where Fields ranked in the bottom 25% are highlighted in red.



A few thoughts:

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Fields in Focus (3/8): Play Action and Time to Throw

| May 5th, 2023

Today is the third of eight articles taking a closer look at Justin Fields’ 2022 season.

All data comes from Pro Football Focus (PFF) unless otherwise noted, and Fields’ stats are only from Week 5 on, as was explained in part one of this series.


Play Action

Let’s start by looking at how Justin Fields did on play-action drop backs compared to standard passing plays. Before I present the full data, I want to briefly explain two PFF stats that will be used:

  • Big Time Throw: these are best described as a pass with excellent ball location and timing, generally thrown further down the field and/or into a tighter window. In other words, these are really good, difficult passes that should result in highly valuable big plays. A higher % here is better.
  • Turnover Worthy Play: These include fumbles in the pocket, interceptions thrown, and interceptable passes that were not caught. A lower % here is better.

Both of these stats will admittedly have some subjectivity, but they provide a useful glimpse into how frequently a QB makes a really good play vs. a really bad one.

The table below shows how Fields performed in a wide variety of statistics in play action (orange) vs. other dropbacks (blue), and also includes Fields’ rank out of 33 total NFL QBs who had at least 240 pass attempts. Information on the spread of all NFL QBs is also provided for each stat. Cells highlighted in green indicate Fields was among the top 25% of QBs in this category, while those in red indicate Fields was in the bottom 25% of QBs.

A few thoughts:

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