When Trent Williams is out, the 49ers need someone who can keep the edge from collapsing. Last season, that role fell to Austen Pleasants, and the results made the need for a sturdier backup obvious.
Pleasants got by against the Chicago Bears, but that was a soft landing. The Bears were one of the luckiest teams in the league and offered almost no pass rush.
A week later, against Seattle, the assignment got much tougher and Pleasants was out of his depth. His blown block rate jumped from 1.5 percent against Chicago to 7.1 percent against the Seahawks, and Kyle Shanahan had to work hard to hide him and keep his role limited.
That’s why Vederian Lowe matters. Williams turns 38 on July 19, and while the ideal scenario is still Williams taking every snap, the 49ers made sure they had a veteran answer if he misses time.
Lowe is 27, has four accrued seasons under his belt, and checks in at 6’6 and 320 pounds. He signed a two-year deal worth $9.5 million, with $5.75 million in fully guaranteed compensation, including a $2.76 million signing bonus.
The structure of the deal suggests the 49ers value him as more than just a camp body; his contract ranks 29th among left tackles. San Francisco also added three void years to spread out the signing bonus, paying him $552,000 over five years, and Lowe has a $2.61 million option bonus that will be paid in $522,000 installments from 2027 through 2031.
The bigger selling point is simple: Lowe has been there before. Pleasants has 186 career snaps.
Lowe cleared that total with the Patriots last season alone in three games. Over his career, he has played 1,529 snaps, which is roughly a season and a half’s worth of work for a starter who stays healthy.
That kind of mileage gives the 49ers some comfort if they have to turn to him.
He’s not the kind of player you want holding down the job for months, but he does look like a legitimate fill-in. The 2022 draft pick has the size the 49ers like, with arm length in the 93rd percentile coming out of college and hand size in the 79th percentile.
Penalties were also less of an issue for Lowe in 2025, when he had just two false starts. In 2024, though, flags were a bigger problem across 749 snaps: 11 penalties total, including five holding calls, five false starts, and one other.
The tape and the numbers point to the same thing. Lowe was more effective when he played more in 2024, posting a 4.3 blown-block rate compared to 6.3 in 2025. Most of his trouble comes in pass protection, where 42 of his 50 blown blocks over the past two seasons have occurred.
There were only a few real rough patches last season, with struggles against the Giants and Ravens. In 2024, the tougher outings came against the Bears, Bills, Rams, and Cardinals. The NFC West appearances stand out, and not in a good way.
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