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Data Entry: Tracking Trubisky’s 2017 Growth Through “The Quarters Lens”

| January 16th, 2018

Former Bears coach Lovie Smith always talked about breaking the NFL season down into quarters, which splits a 16-game season into 4-game sample sizes. I’ve always thought that was a good way to look at it, as grouping four games together helps smooth some of the statistical noise of individual good or bad games.

With that in mind, I want to track Mitchell Trubisky’s rookie season through the quarters lens. Trubisky sat out the first quarter of the season, but took every offensive snap for each of the last three quarters. Let’s see how he progressed through those.


Usage

First, I want to point out that Trubisky was tasked with doing more in each quarter.

In his first 4 games, Trubisky had the ball in his hands on only 26.5 plays per game. Coaches tried to minimize what he had to do, which was why more plays featured handoffs and fewer featured him ending the play with a pass attempt, sack, or run.

In Trubisky’s 5th-8th games, that number increased to 34.3 plays per game, and it took another jump to 39.8 plays per game in the last four games.

For the 32 qualified passers in the NFL this year (224 or more pass attempts), the mean and median were both 38.2 pass attempts, meaning Trubisky was being given as much responsibility (in terms of plays per game) as an average quarterback by the end of the season. This clearly shows that coaches were willing to put more responsibility on Trubisky’s shoulders as the season wore on, which is a good sign.

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Data Entry: Bears Offense Found Better Balance in 2nd Half of 2017

| January 8th, 2018

When the Bears were on their bye week back in November, I looked at Chicago’s play-calling tendencies over rookie quarterback Mitchell Trubisky’s first four starts. In that study, I found that Dowell Loggains’ offense had been incredibly predictable through those four games. The team basically ran the ball if it was 1st or 2nd down and 10 or less and threw it if it was 2nd and 11+ or third down and anything.

This is obviously not a sustainable way to run an NFL offense, so let’s look at how those trends may have changed in the 8 games the Bears played after the bye. As before, all statistics come courtesy of the fantastic NFL play finder from Pro Football Reference.

1st down

In Trubisky’s first four starts, the Bears ran it 72% of the time on first down, but those numbers shifted dramatically following the bye. They actually passed more than running on 1st down in the last 8 games, with only 46% of their 1st downs featuring runs (I should clarify here that throughout this article passing plays are those which were called to be a pass, so either a pass attempt, sack, or QB rushing attempt, while runs are rushing attempts by anybody other than the QB. This assumes all QB runs are scrambles, which might slightly skew the data, but the Bears didn’t call many designed runs for Trubisky this year).

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Data Responds: Bears at Bengals

| December 10th, 2017

Is this real life?

The Bears dominated on both sides of the ball, scored 30 points for the first time in over two years, and generally rolled over the dormant Cincinnati Bengals.

I know Cincinnati is bad and banged up, but so are the Bears, and this was a lot of fun. More importantly, this as led largely by young players for the Bears, which bodes well for the future. Let’s take a look at what happened.

Offense

  • The Bears came out and threw it on their first 2 plays! The first resulted in an awful Jordan Howard drop (drink), while the second was a beautiful play action rollout to Josh Bellamy for a 1st down. This unsurprisingly caught the Bengals’ defense off guard, and they backed off the defense into standard 7 man boxes instead of loading 8-9 up. As a result, the Bears ran it the next two plays for about 40 yards and a touchdown. That marked the first time this season that the offense scored a touchdown on their first possession of the game.
  • Before I get too down on Howard, how about giving it up for a great game from Chicago’s stud running back? He had his 12th 100 yard rushing game in 26 career starts and passed the 1,000 yard mark for the 2nd year in a row, making him the first running back in Chicago history to start his career that way. That’s pretty remarkable when you think of the great running backs who have played in Chicago.

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Data Responds: Bears vs. 49ers

| December 3rd, 2017

The Bears led for almost the entire game, but pretty much everybody watching the game knew what was coming when San Francisco got the ball back down 14-12 with just over 4 minutes to go. The 49ers methodically marched down the field and longtime Chicago kicker Robbie Gould drilled his 5th field goal of the day to send Chicago to their 5th straight loss.

Offense

  • Chicago’s offense came out on the first possession and ran the ball twice in a row out of heavy sets. Anybody who’s watched Chicago this year can already guess how that ended: with Chicago in 3rd and long. That led to a sack of QB Mitchell Trubisky for a nice quick three and out.
  • Speaking of running on first down, the Bears did it 11 times in 14 chances today. Only one of those runs went for more than 3 yards; most went for 0 or 1.
  • It looks like any confidence rookie quarterback Mitchell Trubisky earned from the coaching staff completely evaporated after a bad game last week. They finally opened things up two weeks ago, and the offense shockingly had their best game of the year. Now they’ve had back to back terrible weeks after reverting to horribly predictable play calling.

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Data Responds: Bears at Eagles

| November 26th, 2017

Well that was ugly. This one felt like a few drubbings the 2014 Bears received after the Bears had quit on Marc Trestman. The John Fox era is officially over, though we almost certainly still have to endure 5 more games before it becomes official. Hopefully those games aren’t all this ugly.

The Bears were never going to win on the road against the best team in the NFL, but they looked completely unprepared in every possible way. They picked up penalties, had zero creativity or imagination anywhere, and were generally outschemed, outcoached, and out-executed.

I’m not going to focus much on coaching, because this staff is obviously finished, but one particular atrocity deserves special attention. Facing 3rd and 17 from their own 1 yard line, the Bears called time out to save half a yard from a delay of game penalty. That’s bad enough, but the worst is the offense had only 10 men on the field after an injury time out gave them more than 2 minutes to prepare. That’s a team with comically inept coaching.

I’m going to focus most of my specific observations on the first half, because quite honestly I didn’t pay as much attention after that. The 24-0 halftime deficit meant the game was over by then anyway (honestly, it was over well before halftime).

Offense

  • Mitchell Trubisky threw an early INT on an inaccurate throw, and it caused the coaching staff to turtle back into their worst habits. It was a long time before they let him throw past the line of scrimmage again, and even then that only came on 3rd and long. Instead, they chose to repeatedly run out of heavy sets into loaded boxes. You might be surprised to learn this was not an effective strategy.

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Data Responds: Lions at Bears

| November 19th, 2017

Chicago’s offense had their best game of the year, but their defense played possibly their worst game of the year. All in all, that evened out, but the Bears ended up falling to 3-7 because their kicker is terrible.

Offense

  • Now that’s more like it. The offense was finally run like an NFL offense, mixing things up and keeping the defense off its feet, and unsurprisingly it led to good things happening. Chicago stayed run-heavy in the game, but mixed up how they were running instead of making it so predictable, and thus the run game really took off. As a result, the offense scored more than 17 points in regulation for the 1st time all year.
  • This also helped the passing game open up a bit as well, since the Bears didn’t routinely end up in 3rd and long. This was a nice change from how their offense has functioned most of the year.
  • Another nice wrinkle we saw on offense was a number of read-option looks for quarterback Mitchell Trubisky. He kept it several times (though there was at least one more where he should have) and made Detroit’s defense pay for crashing down on the running backs.
  • After ignoring Tarik Cohen on offense for several weeks, the Bears made a point of getting him involved early and often. He had 8 carries and 3 pass targets in the 1st half alone after getting 8 total touches in the previous 3 games.
  • Another nice wrinkle was lining Jordan Howard up as a fullback, with Tarik Cohen at tailback. This set Howard up with a few nice runs as he could spring through the line quickly and the linebackers had to worry about Cohen.

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Data Responds: Bears vs. Packers

| November 12th, 2017

Chicago came out of the bye flat, acting like nobody actually wanted to play a football game against their biggest rival. Their terrible kicker was good, but nobody else really was. The only thing that kept this game somewhat close was the fact that Green Bay is terrible, but they still won fairly comfortably on the road.

Let’s break down this embarrassing effort.

Offense

  • The first drive was simply awful. After two weeks to prepare, they ran into a loaded box on 1st down and lost a yard. After a nice pass picked up a first down, they again ran into a stacked box and lost a yard. The next play was both an illegal formation and a hold, setting Chicago up in 2nd and 21. At that point, the drive was over thanks to a combination of poor play calling and dumb penalties.
  • Rookie quarterback Mitchell Trubisky actually had a pretty good start to the game. He made good throws and got the ball to players in space. That changed as the game wore on and Green Bay dialed up the pressure. Trubisky got happy feet and starting pulling his eyes down from scanning the field too quickly. He also refused to throw the ball away, making him completely inept under any sort of pressure.
  • Green Bay’s five sacks weren’t all on the offensive line, but they were bad today too. Hroniss Grasu, making a start at center and shifting Cody Whitehair to right guard with Kyle Long out, was routinely pushed back into the backfield. The unit also picked up way too many penalties, with a nice mixture of pre-snap, during the play, and after the play mixed in.

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Data Entry: Self-Scouting Chicago’s Play-Calling Tendencies

| November 7th, 2017

On to play-calling tendencies.

There have been many, many complaints voiced about Chicago’s offensive play-calling this year, especially since Mitchell Trubisky took over at quarterback. With that in mind, I’m going to look at trends by down and distance in those 4 games. All statistics come courtesy of the fantastic NFL play finder from Pro Football Reference.

1st down

This should surprise absolutely nobody, but the Bears have been comically imbalanced on 1st down since Mitchell Trubisky started playing. They’ve had 95 first downs and called runs on 68 of them, good for 72% of the time (if you look only at the 1st 3 quarters, when game situations don’t impact calls as much, those numbers change to 54 runs on 70 plays, running 77% of the time).

Despite the predictability, they’ve actually been fairly successful running on average, picking up 4.5 yards per attempt, though it’s worth noting that drops to 3.0 when you remove two Jordan Howard runs of 50+ yards. 12 of those runs (18%) have lost yardage, and 20 gained 1 yard or less (29%). This has left the Bears consistently behind the chains, a problem that we’ll see compound on 2nd and 3rd down.

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Data Entry: Self-Scouting Chicago’s Offense

| November 6th, 2017

With the extra time over the bye, this is a good chance to take more of a big-picture look at how the Bears have done so far this year. Thus I’m going to be looking in-depth at both their offense and defense to see what lessons we can learn and areas for improvement in the second half.

Today we’re looking at the offense.

Chicago’s offense has generally been bad so far in 2017. They’re 29th out of 32 NFL teams in yards per game, 31st in passing yards per game, and 28th in points per game. The one area where they are not bad is running the ball, where they are 4th in yards per game and 8th in yards per attempt.

These basic stats are easy to look up, but there’s a lot of information that they don’t tell you. In order to break it down a little bit further, I used the NFL Game Statistics Information System 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. Let’s have a look.

Rushing Attack

Here’s the data for Chicago’s rushing attack 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 (all ranks through week 8 only). 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.

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Data Responds: Bears at Saints

| October 29th, 2017

The Bears played pretty evenly with the NFC South-leading New Orleans Saints on the road, but a series of missed opportunities (helped by one atrocious call by the officials) cost them the chance to enter the bye at 4-4.

Perhaps most important to Chicago going forward, the loss was a costly one for the Bears. Four starters left the game with injuries and did not return, including guard Kyle Long (hand), center Cody Whitehair (arm), cornerback Bryce Callahan (knee), and tight end Zach Miller (leg). We’ll wait to see how serious the injuries are, though I can say fairly confidently that Miller’s gruesome leg injury means his season (and likely his career) is finished.

Still, the best news to me from the game was that they kept fighting. When they went down 17-6 early in the 4th quarter, I expected them to roll over and quit, but from that point on the defense forced two turnovers, the offense scored a touchdown, and the special teams picked up a big return to keep Chicago in the game. The attitude on the team is changing, and the importance of that can’t be overstated.

Offense

  • The Bears were forced to ask for a bit more from rookie quarterback Mitchell Trubisky this week, and we saw some of both good and bad, as should be expected from a young quarterback. We saw the talent leading to some big plays, and we saw the rookie mistakes leading to missed opportunities and/or negative plays. The overall stat line (14/32, 164 yards, 0 TD, 1 INT, 46.9 rating) looks ugly, but his performance was not that bad. Notably, Trubisky threw 2 touchdowns, but one of them was taken away by a terrible officiating call and one of them was inexplicably dropped by a wide open Jordan Howard.

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