Mykel Williams
Getty
The 49ers' defensive line could be set to dominate in 2026
The San Francisco 49ers‘ 2025 campaign was defined by injuries. For the second straight year, the Niners dealt with injuries from the get-go, but unlike the 2024 season, they managed to find a way to overcome their woes and make a playoff run. When all was said and done, making it to the divisional round of the playoffs felt like a win for San Francisco.
Assuming the team can stay healthy in 2026, there’s good reason to believe that the 49ers will be one of the top teams in the league. San Fran is armed with depth across the board, but its defensive line may just be its strongest position. In fact, a quick look back at the beginning of the 2025 season has revealed a surprising development that could bode well for this group when it eventually returns to action.
49ers’ Defensive Line Could Be Poised for Strong 2026 Campaign
David Lombardi
The sample is small, but Weeks 1-2 from 2025 are all we have to evaluate the designed productive cohesion of the 49ers’ D-line with eyes turned toward 2026.
Before the injury rash, the 49ers had Mykel Williams gobbling double teams and 2 edge rushers with good pass-rush win
Injuries hit the 49ers hard at every spot, but their front seven on defense took a beating. Two of the team’s best players, Nick Bosa and Fred Warner, missed virtually the entire year, and first-round rookie Mykel Williams only played in nine games. That forced defensive coordinator Robert Saleh to find a way to get production out of a rotating cast of characters, and to his credit, he managed to do just that.
In the first two weeks of the season, San Francisco appeared to feature one of the most dominant defensive lines in the league. Bosa is obviously a superstar, but Williams was able to make an immediate impact, as was under-the-radar free agent signing Bryce Huff. Then, the injuries piled up, and the Niners were forced to string things together for the rest of the year.
Heading into the 2026 campaign, though, Bosa and Williams are expected to be healthy, which could give San Francisco one of the deadliest pass-rush duos in the league. It’s a small sample size, but 49ers insider David Lombardi believes the first two games of the 2025 campaign could provide a glimpse at what this unit will be capable of next season.
“Weeks 1-2 from 2025 are all we have to evaluate the designed productive cohesion of the 49ers’ D-line with eyes turned toward 2026,” Lombardi wrote. “Before the injury rash, the 49ers had Mykel Williams gobbling double teams and 2 edge rushers with good pass-rush win rates. Then D-linemen were thrown out of position and the defense tumbled from its early top-3 EPA marks to a #25 finish. How will the 49ers round out their unit for 2026? Still work to do.”
49ers Have Sights Set on Super Bowl in 2026
Kyle Shanahan, Los Angeles Rams
GettySan Francisco 49ers head coach Kyle Shanahan looks on after a loss against the Los Angeles Rams.
Considering what the 49ers were able to do with a banged-up team last year, it’s fair to wonder what they will be capable of with a healthy squad. Several key players are still recovering from their injuries, but when they are healthy, San Fran has one of the most talented rosters in the NFL. And now, it has an extra layer of depth at its disposal after finding a handful of guys who filled in admirably for injured stars like Bosa and Warner.
It’s tough to put too much stock into what we saw from the Niners last season, just because their roster looked unrecognizable by the end of the year. After two years full of injuries, San Francisco is hoping for a season of good health, because if the team can keep its best players on the field, a Super Bowl run could be in their future.