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Data Entry: Breaking Down Trubisky’s Interceptions

| January 23rd, 2018

In his rookie season, Mitch Trubisky got to play 12 games and throw the ball 330 times. In those 330 attempts, he threw 7 interceptions, which is actually pretty good. That rate – an interception on 2.1% of his throws – was 12th best in the NFL among qualified passers, ahead of established veterans like Matt Ryan, Ben Roethlisberger, and Aaron Rodgers.

As that list above shows, there’s more to being a good quarterback than simply not throwing interceptions. But avoiding interceptions is an important part of a quarterback’s job; in no small part because they can be game-changing plays that make it a lot harder to win.

But not all interceptions are created equal. Sometimes it’s the quarterback’s fault, sometimes it’s on the wide receiver, and sometimes it’s hard to tell. In general, I think you can group them all into one of four categories:

  1. Bad decision. These are throws that should never be made because the receiver isn’t open and a defender has a good chance at an interception. Bears fans have seen plenty of these in the last 8 years from balls being chucked up into double or triple coverage.
  2. Bad throw. The target is open, but the pass is off target. The problem here comes not in the choice to throw but in the throw itself.
  3. Miscommunication. The quarterback thinks the wide receiver is running one route, the wide receiver runs another route, and the defensive back is the beneficiary.
  4. Receiver error. The receiver is open, the pass is good, but the ball bounces off of the target’s hands and gets intercepted.

The first two are both the fault of the quarterback, though in very different ways. The third one makes it pretty much impossible for us to assign fault. The last one is the fault of the target.

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Data Responds: Bears at Vikings

| December 31st, 2017

Sorry for the break the last few weeks. I haven’t been able to watch games live due to various holiday scheduling hijinks. Darn that real life for getting in the way!

Before we get into today’s game specifically, reports are that John Fox will be fired today. I won’t miss you as Chicago’s head coach.

In general, this game looked very much like a disinterested team playing out the string on the road for a soon-to-be-fired coaching staff against a hungry opponent playing to lock up a first round bye.

Offense

  • The Bears got the ball to start and opened with a heavy set Jordan Howard run into a stacked box for no gain. On their 2nd drive, they followed that up with a Jordan Howard run into a stacked box for -4 yards. Shockingly, both drives ended in 3 and outs. Oh how I am not going to miss that.
  • On Chicago’s 3rd drive, they threw the ball on 1st down! You’ll be surprised to find out that not being incredibly predictable actually worked. Of course, the Bears followed that up with a FB dive into a 9 man box on 3rd and 1 (why is Michael Burton still a thing?), which lost yardage and forced a punt. Before they could get the punt off, the Bears took a delay of game penalty, because of course.
  • Rookie QB Mitchell Trubisky had a bad rookie moment that resulted in a safety. Under pressure, he kept backing up until he was in the end zone, which was the mistake. He then threw the ball away to pick up an intentional grounding penalty, which is a safety in the end zone. My complaint is not with the grounding, but with the fact that he backed up into the end zone first. He could have taken the sack at the 3 yard line, and needs to know the field position situation there.
  • Trubisky also had a terrible throw in the fourth quarter where he missed a wide-open Dontrelle Inman because his feet were not properly set. Despite a clean pocket, he did something weird where he torqued his upper body, which caused him to put the ball far too wide and out of bounds. Those mechanical issues, and the corresponding accuracy concerns, have been a repeated problem this offseason, and are the #1 thing Trubisky needs to work on this offseason.

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198 Comments

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 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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