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During that time, the team was able to build up a formidable defensive line through the NFL Draft.
The 49ers selected a defensive lineman in three straight drafts, starting with Arik Armstead in 2015.
It took some time, along with adding two menacing defensive ends, for the world to witness the full potential of the 49ers' defensive line.
The NFL, unfortunately, is not a fantasy world where the roaring success and triumphs last for decades.
This offseason, the 49ers were put in an undeniable dilemma and one the team had not faced in years: a salary cap battle and severe questions on which players to keep.
According to ESPN's Adam Schefter, the 49ers sent defensive lineman DeForest Buckner to the Indianapolis Colts for the Colts' first-round pick in the 2020 draft. Buckner will make $21 million per year, putting him right behind the Los Angeles Rams' Aaron Donald.
Trade AND deal: Colts trade first-round pick (13th overall) to 49ers for All-Pro DT DeForest Buckner, who already has agreed to a massive contract that pays him $21 million a year and makes him the second-highest paid DT in NFL history behind only Aaron Donald, sources tell ESPN.
— Adam Schefter (@AdamSchefter) March 16, 2020
Hours before, the 49ers announced that Armstead would remain in the Bay Area for the next five years. Armstead's new contract guarantees him $48.5 million, and he can pocket nearly $85 million.
It's sad to watch the 49ers' defensive line break apart, but the time is now for two 49ers to prepare for a more substantial role this coming season.
D.J. Jones
Defensive tackle D.J. Jones was a sixth-round pick in the 2017 NFL Draft. Since then, he's become an integral role for the 49ers and improved his pass rush, run defense, and overall play each year.
Jones was having one of his best games as a professional in Week 14 last year before suffering a high-ankle sprain. The 49ers were forced to place Jones on the injured reserve list on December 14, 2019. No more did the 49ers miss Jones' presence than during the Super Bowl loss to the Kansas City Chiefs.
Buckner's departure immediately elevates Jones' importance to the 49ers, both to help crush the run and clog up the interior line on inside stunts.
Week 2 – 1st Quarter: 1st and 10 at the CIN 12 (14:54)
The 49ers' first defense set the tone on the opening play of the Week 2 contest against the Cincinnati Bengals.
After breaking the huddle, the 49ers' defensive line set up in an 'over' front with Jones lined up in a 2i position. Jones shot to the opposite A-gap, which allowed the faster Buckner to swoop behind and shoot the opposite A-gap.
Jones was not and still will not be the fastest defensive lineman. But what he lacks in speed, he makes up for in strength. He overpowered Bengals center Trey Hopkins and found himself as one of four 49ers ready to take down quarterback Andy Dalton.
Even if opposing offensive linemen get tricky and double team both Armstead and Jones, that leaves Ford and Bosa one-on-one against the tackles.
Week 1 – 1st Quarter: 1st and 10 at the TB 27 (3:12)
While not a play that included Jones, here was what happened with Tampa Bay decided to 'duo' Armstead and Buckner, while Ford had to deal with a 'trey' block from the Y and U receivers.
Bosa did not end up with a sack, but he did force quarterback Jameis Winston to scramble in the pocket to find an open receiver.
Interior double teams work against teams with zero speed on the edges. Even with Buckner gone, defensive coordinator Robert Saleh can still rely on a four-man rush knowing that any double-team block will leave one of the teeth in the defensive cogwheel isolated and ready to make a play.
Solomon Thomas
Veteran defensive tackle Solomon Thomas needs 2020 to be his breakout season. Though that statement has been factual for two seasons, and well before the Twitter whispers of Buckner's trade began to kill electrons on screens across the nation.
Thomas, despite moments of solid play, has done little to prove worthy of a high draft choice. Last season, he played 162 fewer snaps than he did in 2018 and declined in overall play.
In 2019, Thomas made three quarterback sacks, two more than in 2018, but he had fewer tackles, quarterback hurries, and run stops. He did play 226 snaps as a defensive tackle, but that was an illusion. Saleh still placed Thomas at an edge position 230 times last year.
Here's one reason why Thomas should not be an edge defender.
On the Rams' first drive, Jones was getting shoved out of position on nearly every run play. Saleh replaced Jones with Thomas, which brought a halt to the Rams' ground attack.
For reasons unknown, Saleh then shifted Thomas back to the edge for the 49ers' fourth defensive series. On the first play, Rams' running back Darrell Henderson gained 22 yards around the left edge.
Thomas continues to struggle with linemen blocking down. The assessment was noted quite clearly in his scouting report: "can get washed out of plays by strong down blocks..."
Shortly after this series, Saleh moved Thomas back inside.
Week 6 - 3rd Quarter: 1st and 10 at the LAR 15 (4:50)
Once back in his natural position, Thomas sacked Goff for an eight-yard loss.
His speed, combined with his overall strength, was too much for Rams' center Brian Allen.
Yesterday's trade was one of the few results that yield wins for all involved. Buckner deserved to sign a cash-laden contract, and the 49ers could not make that happen. He's headed to an emerging Colts team with the possibility of making the playoffs next season.
The 49ers needed to add draft capital to the board, and gaining the 13th overall selection allows general manager John Lynch to continue building the roster with young talent.
All images courtesy of NFL.com.
All statistics courtesy of Pro Football Reference unless noted.
- Bret Rumbeck
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Written by:Bret Rumbeck has been writing about the 49ers since 2017 for 49ers Webzone and 49ers Hub. He is a Turlock, CA native, and has worked for two members of the US House of Representatives and one US Senator. When not breaking down game film, Bret spends his time seeking out various forms of heavy metal. Feel free to follow him or direct inquiries to @brumbeck.
