Biggest Takeaways from Jacksonville Jaguars' Week 12 Loss

The Jacksonville Jaguars (4-7) suffered a tough loss to the San Diego Chargers on Sunday, falling 31-25 in a game that should've likely been a win or at worst a closer defeat.

It took nearly the entire game for the Jaguars to score a touchdown in the red zone, making the scoreline more appealing than the actual game. The Jaguars were within reach of the Chargers in terms of points, but the major factor of the loss was red-zone incompetence.

In this slideshow, it's time to look at some of the other takeaways from the game.

Despite the loss, there were some positives from Sunday's outing. Quarterback Blake Bortles played another good game, the defensive front was solid and the team continues to look better overall.

However, the remaining flaws are so apparent and decisive in the results that one has to wonder how long it'll take to overcome them. Whether it's coaching, personnel or likely a mixture of both, this team has had trouble shaking persistent flaws.

The 4-7 Jaguars still have a lot to play for this season, and they aren't completely out of the race for the AFC South or a wild-card berth. The objective is still the same: win.

The 'Leo' Falls Short Again

Chris Szagola/Associated Press

The Jaguars currently have four players on roster who slot in at the "Leo" position: Chris Clemons, Andre Branch, Ryan Davis and Chris Smith. All four were active to try to fit the mold of pass-rushing specialist, and all failed.

Between the group, they totaled two tackles, three penalties and one QB hit. For a position that caters to one-on-one matchups, that is pretty much unacceptable.

The Jaguars didn't seem to have this problem last year. Clemons got to the QB rather consistently, Branch performed averagely as he's done throughout his career and Smith and Davis shone when they got their limited snaps.

That hasn't happened this year, for whatever reason. The Jaguars' inability to get to the QB is something that has mystified the franchise and fans—especially since it was an area that the Jaguars excelled in last year and had high expectations for this year.

We're 11 games in, and there isn't much to show for it from the Leos. Barring a drastic turnaround in the final weeks, this position may go down as one of the most disappointing on the entire team.

T. J. Yeldon Continues to Show Promise, Short on Chances

Phelan M. Ebenhack/Associated Press

Running back T.J. Yeldon opened up Sunday's game with a bang. He took a swing pass 20 yards, and it was a big play to start the Jaguars' opening drive. A few plays later, Yeldon caught another pass and ran for 14 yards.

Mixed in with two rushes for nine yards, Yeldon's opening 43 yards seemed to be setting up for a great day.

But through the ensuing 11 drives, Yeldon only touched the ball nine times. He may not be having the explosive impact of fellow rookie running back Todd Gurley, but against a struggling Chargers rush defense, Yeldon was set up to have a huge day.

For whatever reason, offensive coordinator Greg Olson decided to stray away from using Yeldon. The offensive line struggled at times, but even later in the game, Yeldon and RB Denard Robinson were able to bust decent-sized runs.

It just doesn't make sense.

Sure, Bortles' poorly timed pick put the Jaguars down 21-9 right before the half, but the Jaguars had stopped running with balance drives before that. Sure, the Chargers were going to score some points, but the idea that Bortles has to throw 49 times for a chance to win is absurd.

Olson has done a lot of good things as OC, but Sunday's game was confusing. The Jaguars have a weapon in Yeldon, both in the run and the pass, and they failed to utilize him—even when it was successful.

Paul Posluszny Continues to Shine

Stephen B. Morton/Associated Press

Linebacker Paul Posluszny has always been praised for his high amount of tackles and visible work ethic, but the 2015 season has been something else entirely.

"Poz" has been racking up tackles and making more impact plays.

He's already brought down two interceptions, and he added three more tackles for loss on Sunday to bring his total number to seven on the season. He didn't have an assisted tackle, and his 11 solo tackles lead in the solo column as well as the combined column.

It was a plausible thought that this could be a year of regression for Posluszny, and there's no doubt that the 31-year-old may be getting close to the twilight of his career. But in the meantime, Posluszny has been one of the best players—if not the best player—on the defense in 2015.

His value transcends his play on the field, and he's a rock and organizer who helps string together a talented but relatively young defense. Having a player like that is priceless.

There may be another year or two for Posluszny with the Jaguars, and it's that multifaceted value that would likely keep him around. With five games left on the season, Poz will look to take a great individual season even higher.

Davon House Shows That He's Human

Logan Bowles-USA TODAY Sports

Sunday was not a day to remember for Jaguars corner Davon House. He's been close to the "shutdown" label all season, but he has now had two games where he was proved human: against wide receiver DeAndre Hopkins of the Houston Texans and on Sunday in all assignments.

He lined up against various receivers, and that may have thrown him off. Either way, there were plenty of scenarios in which he was beaten by Chargers WR Malcom Floyd and tight end Antonio Gates.

It was the first game since the Week 2 win over the Miami Dolphins that House did not record a pass defended. He's been consistent every game, and his 17 on the season is still very impressive.

The Jaguars will look to beef up the secondary in the offseason, which will be to their own and House's benefit. As good as House has been, he's not going to be that impressive every game, and Sunday showed what happens when he isn't.

Allen Hurns Suffers Concussion but May Be Able to Return Soon

Sam Greenwood/Getty Images

Allen Hurns' scary concussion was met with some positive news from head coach Gus Bradley in his postgame press conference on Jaguars.com. Hurns is undergoing the NFL's concussion protocol and more information will come on Wednesday.

Considering that Hurns had to be stretchered off the field, this is perhaps the best possible news.

All neck and head injuries came back negative, and while concussions aren't something to play with, an already-battered Hurns may have dodged a bullet.

The sophomore receiver has been one of the team's primary offensive weapons this season—totaling seven touchdowns and 758 receiving yards is already an improvement on his rookie year—and there's no doubt he has a lot of talent.

But this season has seen Hurns deal with a variety of injuries, and the fact that he's powered through has been impressive. He's got proven toughness, and the fact that he's still looking to play despite all of that is a testament to that quality.

We'll see where this goes. Depending on upcoming results and Hurns' progression, it may be best to put him on injury reserve to prevent further and worse injury.

But if the first 11 weeks of the season are any sign, we may see Hurns take the field again before the season is over.

All stats provided by ESPN.com unless otherwise stated.

Evan Reier is a Featured Columnist for Bleacher Report covering the Jacksonville Jaguars. Follow Evan on Twitter @evanreier.