49ers Defensive Line Shakeup Just Added Intrigue To Rams Opener

With a key player sidelined, the 49ers swiftly reinforce their defensive line ahead of a historic season opener against the Rams in Australia.

The 49ers made a quick adjustment to their edge-rush group on Friday, signing defensive lineman Khalid Kareem to a one-year deal and moving Sam Okuayinonu to injured reserve before next week’s season opener against the Rams in Melbourne.

Okuayinonu’s path to IR started with a foot injury in practice in Santa Clara. He never got on the team’s charter flight, was first ruled out for the international game, and then landed on injured reserve, which means he has to miss at least four games under league rules. He could return in Week 5 if the foot allows it, though the team has not publicly gone beyond identifying it as a foot injury.

ESPN’s Nick Wagoner reported the earlier out designation, posting: “#49ers officially ruled DE Sam Okuayinonu (foot) out for next week’s game against the Rams.”

Kareem, 28, arrives from the Atlanta Falcons’ practice squad. NBC Sports, citing Fox Sports’ Greg Auman, reported the move before the team’s official announcement later Friday evening, and also noted that Kareem was headed to Melbourne to join the active roster before kickoff.

This isn’t just a depth signing for the sake of it. Kareem spent 2024 and 2025 in Atlanta under Raheem Morris, who is now San Francisco’s defensive coordinator.

That familiarity matters. A player who already knows the calls can step into rotational snaps without a long ramp-up on a foreign practice field.

The 49ers listed Kareem at 6-foot-4 and 268 pounds. He was a fifth-round pick, No. 147 overall, by the Bengals in 2020 out of Notre Dame.

In 34 career games with Cincinnati, Indianapolis, Chicago and Atlanta, the 49ers’ release credited him with 41 tackles, 1.0 sack, two passes defensed, one forced fumble and one fumble recovery. In four games with Atlanta in 2025, he had seven tackles and one pass defensed.

The bigger picture is still about what San Francisco is missing. Niners Wire noted Kareem has 26 pressures and that lone sack across 559 career snaps.

That’s not the profile of a featured pass rusher. It’s insurance, plain and simple, with Matthew Stafford waiting on the other side.

Okuayinonu had become one of the steadier pieces in that rotation. In 2025, he played 15 games with 12 starts and finished with 39 tackles, 3.0 sacks and one forced fumble, per the team. Field Level Media, via Reuters, also relayed Morris calling him “a barnyard bully” who can work the line of scrimmage and shed blocks.

San Francisco’s edge room was already in flux. Nick Bosa traveled after tearing his ACL in 2025 and dealing with tendinitis in the repaired knee during camp.

He returned to practice this week and has said he expects to play. Keion White is the other projected starting end, rookie Romello Height has been working back from his own issue, and practice-squad options such as Ogbo Okoronkwo remain on hand if needed.

The timing of all this is tied to a game with some real novelty. The Rams and NFL have the matchup as the league’s first regular-season contest in Australia, set for Thursday, Sept. 10, at 5:35 p.m. PT and Friday, 10:35 a.m. local time at the Melbourne Cricket Ground, with streaming on Netflix.

The 49ers got to Melbourne Friday morning after a 15-hour Qantas charter, according to NFL.com. Their Saturday walk-through was closed. Several players, including Deebo Samuel and Trent Williams, were at an Australian rules playoff game Friday night at the same MCG, per the Mercury News, with the stadium about a mile from the team hotel.

Okuayinonu had even talked this week about the building before the injury, describing the 100,000-seat venue as “full with energy,” according to the Mercury News. Instead, he’ll miss the opener and at least three more games after that.

For Kareem, the assignment is more straightforward: get up to speed on a defense he already knows, give the 49ers a few useful snaps, and help keep the edge from thinning out too much in a game being played on the other side of the world.

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