In the fourth installment of the 49ers position-by-position breakdown, 49ers.com is taking a look at how the linebacker position could take shape in 2020 and the depth behind its trio of starters.

Kwon Alexander hikes with Todd Gurley, Arik Armstead discusses race and the NFL in Sactown Magazine and 49ers PREP shares an exercise guide to strengthen your upper body.

Players welcome new teammates Javon Kinlaw and Brandon Aiyuk to the 49ers on social media.

A look at all of the recipients for the franchise's annual awards.

Top quotes from both locker rooms following the 49ers 27-10 NFC Divisional Round victory over the Vikings. 

Defensive leader Kwon Alexander is expected to make his highly-anticipated return in the postseason.

Alexander sought the advice of Texans All-Pro defensive end following mid-season pectoral tears as both anticipate making early returns in the playoffs.

San Francisco's linebacker appears to be ahead of schedule from a pectoral injury, however Kyle Shanahan isn't bullish on his speedy return.

Let's take a look at the stats that have been key to the 49ers undefeated start.

It was confirmed on Friday one of the heartbeats of San Francisco's defense suffered a season-ending pectoral tear.

Top quotes from both locker rooms following the 49ers 28-25 victory in Week 9. 

Top quotes from both locker rooms following the 49ers 51-13 victory in Week 8. 

After six weeks of football, find out where Pro Football Focus lists the 49ers defense. 

Here are five key matchups that could decide the 49ers divisional clash with the Rams. 

The 49ers travel to Los Angeles to take on the Rams in Week 6. Here's everything you need to know about the upcoming matchup. 

Here are five key matchups that could decide the 49ers Monday night battle against the Browns. 

Top quotes from both locker rooms following the 49ers 24-20 victory in Week 3. 

The 49ers return to Levi's® Stadium for the home opener against the Pittsburgh Steelers in Week 3. Here's everything you need to know about the upcoming matchup. 

Jeff Deeney provided grades for the 49ers top performers in Week 2 and three were named to Pro Football Focus 'Team of the Week'.

Top quotes from both locker rooms following the 49ers 31-17 victory in Week 1. 

The 49ers travel to Kansas City to take on the Chiefs in Week 3 of the preseason. Here's everything you need to know about the upcoming matchup. 

The defense had a standout session with five takeaways during the 49ers final practice at the SAP Performance Facility.

Notes from Sunday's training camp session, highlighted by the defense.

The GM said that Jerick McKinnon is in the team's plans for next season.

The 2019 Men's NCAA Basketball Tournament is back and members of the San Francisco 49ers are ready to root for their respective Alma Maters.

Take a behind the scenes look at the 49ers socially distanced media day.

Check out the defense's best interceptions and fumble recoveries from the 2019 season.

Take a look at some of the best moments from the 49ers 13-3 regular season campaign.

Hear the best bench sounds from 49ers players, coaches and Faithful during the NFC Championship win over the Green Bay Packers.

T Joe Staley, FB Kyle Juszczyk, T Mike McGlinchey, RB Raheem Mostert and other members of team discuss the team's 37-20 victory over the Green Bay Packers to send the team to the Super Bowl LIV.

RB Raheem Mostert, DL Nick Bosa, DL Dee Ford and other 49ers players discussed the team's preparations to contain Aaron Rodgers and the Green Bay Packers on Sunday at Levi's® Stadium.

NFL Network's Brian Baldinger breaks down the 49ers defensive attack in the NFC Divisional Round victory over the Minnesota Vikings.

Hear the best bench sounds from 49ers players, coaches and Faithful during the NFC Divisional Round victory over the Minnesota Vikings.

Kwon Alexander, Emmanuel Sanders, Dee Ford, Joe Staley, and others analyzed the 49ers 27-10 victory over the Minnesota Vikings.

Watch all the best plays from the 49ers defense in the team's 27-10 victory over the Minnesota Vikings.

Watch the top plays from the 49ers 27-10 playoff victory over the Minnesota Vikings.

LB Kwon Alexander, T Joe Staley, DL Nick Bosa, LB Dre Greenlaw, WR Deebo Samuel, RB Raheem Mostert and T Mike McGlinchey spoke about Alexander's return to the practice field and the team's goals during the extra week of practices before the Divisional Round.

Watch the best defensive plays from the San Francisco 49ers during the 2019 regular season.

Go on the 49ers sideline with Kwon Alexander, George Kittle, Jimmy Garoppolo and the rest of the team during the Week 17 win over the Seattle Seahawks.

NFL Network's Brian Baldinger analyzed the performance by the 49ers defensive front in the team's 51-13 victory over the Panthers in Week 8.

Fred Warner, Ronald Blair III, Arik Armstead, Kwon Alexander and Emmanuel Sanders reacted to the team's 51-13 win over Carolina and the performance of Nick Bosa.

Laken Tomlinson and Keiana Martin broke down 49ers defensive performance against the Redskins in Week 7.

Listen in as linebacker Kwon Alexander is wired for sound during the 49ers 9-0 victory over the Washington Redskins.

The San Francisco 49ers are taking things back to 1994 with their throwback inspired alternate uniforms.

Kwon Alexander, Kendrick Bourne and Nick Bosa reacted to 49ers six-game winning streak to start the 2019 season.

Watch the top highlights from the 49ers victory over the Washington Redskins in Week 7.

Alexander knocked the ball loose and Taylor picked it up for the 49ers 13th forced turnover on the season.

Fred Warner, Solomon Thomas, Kwon Alexander and Daniel Brunskill reflected on the team's 20-7 victory in Los Angeles.

Kwon Alexander and Fred Warner detail the origins of the "Hot Boyzz" and discussed other members, "German Terminator" Nzeocha, "Silent Killer" Al-Shaair, Dre "Young Buck" Greenlaw and "Flan the Man" in this week's Toyota 1-on-1.

Tim Ryan breaks down the 49ers strong defensive performance to open the season in this ORIG3N DNA of a Play.