Defensive tackle Malik Jackson came into Sunday’s game against the 49ers ready to show he was deserving of his first career Pro Bowl selection announced last week.

Yet, after suffering an embarrassing 44-33 loss on Sunday at Levi’s Stadium, he had nothing to say.

Jackson struggled like his teammates and his frustration was visible in the locker room when he dressed in silence without speaking to reporters.

He also lost his composure on the sideline in the first half when he got into an ugly verbal confrontation with nickel back Aaron Colvin in which they had to be separated by teammates.

In one of the few times this season, the Jaguars’ defense unraveled.

Now, it’s a matter of urgency to make sure it doesn’t happen again, especially with the playoffs looming.

At 10-5, the Jaguars close out the regular season this Sunday at Tennessee.

"I hate to say this, but we needed this," cornerback A.J. Bouye said. "It humbled a lot of people. We recognize it and we’ve got to get ready for (Tennessee) and just get it rolling going into the playoffs.

"They’ve (49ers) got a hell of a coach, (Kyle) Shanahan,’’ Bouye said. "He really outschemed us. We tried to adjust, but even with the formations they had we couldn’t adjust to the stuff they were beating us out."

Despite coming in against the 49ers as the top-ranked defense against the pass, the Jaguars were shredded by quarterback Jimmy Garoppolo, who passed for 242 yards and two touchdowns.

"We’ve got to deal with the things of this game like penalties, the emotions running high and bickering and stuff,’’ cornerback Jalen Ramsey said. "But it’s not something that’s been carrying on. That’s not an issue. We’re confident and we believe that we’re the best, they just got the better of us.’’

It went downhill for the Jaguars shortly after kickoff.

Until Sunday, the Jaguars had not allowed an opening touchdown drive in 21-consecutive games.

Garoppolo, however, marched the 49ers downfield for a 10 play, 79-yard drive before scoring on a 1-yard keeper.

They were vulnerable to bootleg plays by Garoppolo and passes over the middle in which the linebackers were supposed to be in position to cover but were unable to.

Even Pro Bowl cornerbacks Bouye and Ramsey had problems covering the 49ers’ receivers.

Ramsey had seven tackles but no passes defensed or intercepted.

Bouye had only one pass defensed and no interceptions.

The Jaguars’ lone takeaway was safety Barry Church’s interception in the second quarter that set up the Jaguars’ first touchdown on Leonard Fournette’s 1-yard run.

Despite entering the game with a league-high 51 sacks, Yannick Ngakoue had the Jaguars’ only sack on Sunday. In one of few times this season, the Jaguars’ four-man front struggled to get off blocks, which allowed Garoppolo amble time to find receivers.

"They did some things we hadn’t seen on tape," defensive tackle Calais Campbell said. "It is what is what it is. At the end of the day, we didn’t get the job done. We’ll bounce back and go to work on Wednesday."

The Jaguars also were their worst enemy. Linebacker Myles Jack, Ngakoue and Jackson all committed personal fouls that helped to extend two 49ers drives that ended as touchdowns in the second half.

After surrendering a season-high for points, the Jaguars slipped from No. 1 (14.9) in scoring defense to No. 2 (16.9) behind the Vikings (16.1). They still remain No. 1 in pass defense (173.5).

"We still can’t knock what we have done," linebacker Telvin Smith said. "Obviously the things that hurt us in this game, we can’t let happen again. We have to finish strong and not get ahead of ourselves and just go out and play. That’s what I know we’re going to do."