49ers Get A Defensive Boost As One Roster Concern Lingers

With DeForest Buckner and Nick Bosa back in action, the 49ers' practice sessions are reinvigorated, fueling their Super Bowl ambitions with a nearly full-strength defensive line.

SANTA CLARA - The 49ers’ practice field looked a lot like 2019 on Wednesday, and not just because of the names.

DeForest Buckner was out there for his first practice since last week’s trade from the Colts, and Nick Bosa joined defensive line drills after missing the past five games with a calf injury. It was the first time Buckner and Bosa had practiced together since the 2019 team’s Super Bowl prep, with Fred Warner and Dre Greenlaw nearby as well in a linebacker group that has also been restored this season.

“It’s pretty cool. It’d make a good documentary if we did it,” Bosa said of the reunion feel around the team.

The 49ers, who are 6-1 and in first place, have another familiar face still working his way back. Deebo Samuel did not practice because of a hamstring strain, and Mike Evans also remained out while his Achilles tendinitis continues to improve, coach Kyle Shanahan said. The next stop is Sunday’s home game against the Raiders.

Bosa said the left-calf strain he suffered Sept. 24 took longer than he expected to shake, and he tied the injury back to the 49ers’ season-opening trip to Australia, where he returned from a September 2025 ACL tear. He played well in that win over the Rams, then suited up again in the home opener against Miami before the calf issue hit in Week 3.

“I must have had some compensation going on, especially that first week back, trying to push it with the (patellar) tendinitis, so I may have been favoring it,” Bosa said.

He said last month that he hoped to be back for the final two games before the bye, and he credited the team for helping him get there mentally and physically.

“It’s been tough but obviously the team had my back and held it down,” Bosa said. “It’s a long year and I kept reminding myself that, to be ready for the long haul.”

The reunion with Buckner clearly meant something to him, too.

Bosa called it “amazing” and said he had “jokingly” brought it up to Shanahan months ago. “But the fact it actually happened, it’s a full-circle moment,” Bosa added. “It’s like he never left when he came in here”

Wednesday’s defensive line work included nearly the full group, with Alfred Collins and C.J. West the only ones missing because they’re on Injured Reserve. Mykel Williams, Keion White and Romello Height are in line to rotate at defensive end with Bosa, while Shanahan said Buckner could line up anywhere across the team’s five-man fronts.

“It gets real around this time of year and we have the right mix of veterans and young guys to where everyone understands we have to keep ascending,” Bosa said.

Christian McCaffrey also gave an update after the bye week, saying he had “no idea” that it was his hamstring, not his quadriceps, that bothered him in Atlanta. He didn’t practice Wednesday, though that’s usually a lighter day for him with individual conditioning work. Shanahan said McCaffrey might be limited Thursday.

“It wasn’t too bad,” McCaffrey said. “Having the bye week was awesome.”

Shanahan also confirmed the 49ers nearly worked out a trade with the Vikings last week to bring back Jauan Jennings, but Jennings backed out after a FaceTime call with Shanahan.

“We love Jauan. We have such a good relationship with Jauan and know him really well and we didn’t want to do it without talking to him first.

So, we had to agree on some things to at least make it close enough to be able to talk to him,” Shanahan said. “Then when we got on a FaceTime with J.J., it went well.

It was awesome. We talked about a lot of stuff, and he ended up saying that he was happy with where he was.

It wasn’t just like a definite no first, but he was like, ‘Man, Kyle, I’m pretty happy here and liking stuff.’ And when I heard the way he talked and where we’re at, I agreed with him.

So, it was a good conversation and something that was possible, but that’s why it didn’t go down.”

Demarcus Robinson was on the field Wednesday as his three-week evaluation window opened, giving the 49ers a decision point on when to activate him from Injured Reserve after his Week 2 ankle injury.

The receiver group is still short-handed. Evans and Samuel were both out, along with De’Zhaun Stribling, who has an ankle injury, and Ricky Pearsall, who is out for the season after knee surgery.

Evans has made a major impact in his first season after 12 years in Tampa Bay, with 27 catches for 420 yards and three touchdowns. Samuel has been out since the Oct. 11 win at Seattle, and his season line stands at 16 catches for 206 yards and three touchdowns, plus 78 rushing yards on nine carries and 281 kick-return yards on 11 returns.

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