Bosa’s first practice in seven weeks puts 49ers’ Week 9 defense back in play

Nick Bosa’s return to practice changes the shape of Sunday’s conversation for San Francisco. After seven weeks away from the field, the edge rusher was back on Wednesday in a limited role, giving the 49ers a chance — not a certainty — to have one of their most disruptive defenders available against the Raiders.

That matters because the injury update did not stop at Bosa. Christian McCaffrey also stayed in the mix for Week 9, even though he did not practice Wednesday because of the hamstring injury that cropped up in Week 7. The 49ers came out of their bye with two of their biggest names in different stages of recovery, and the gap between “limited” and “did not practice” is the main story heading into the weekend.

Bosa had not practiced since injuring his left calf in practice six weeks ago. Wednesday marked his first session back, and he was listed as a limited participant. In the same update, he described himself as ready, but the roster status still leaves the final call where it belongs: in the team’s hands and on the injury report. CBS Sports also listed him as questionable for Week 9 against Las Vegas, which fits the uncertainty rather than erasing it.

The contrast with McCaffrey is just as important. He missed Wednesday’s work, but the report also said coach Kyle Shanahan expected the team to try him on a limited basis Thursday. That sequencing suggests a decision process still underway, not a finished one. McCaffrey said his leg went dead in the game against Atlanta and that the injury was not too bad, but the report stops short of confirming he will suit up.

Those distinctions matter because the 49ers are not dealing with a vague late-week injury cloud. They are managing two high-impact players on different timelines, and each one affects a different layer of the game. Bosa changes how a defense can rush the passer and set an edge. McCaffrey changes how an offense can build its run game and handle backfield touches. A return from either player would alter the plan; a return from both would do more than that.

San Francisco’s broader injury picture adds another wrinkle. Deebo Samuel is not likely to return this week as he continues to recover from a hamstring injury, while Demarcus Robinson had a path toward playing after his first practice since injuring an ankle. The 49ers have spent enough time shuffling bodies that each participation update now carries real lineup weight, especially at spots where production has already been thin.

For Bosa, the immediate consequence is straightforward: a practice debut after a long layoff keeps Sunday alive as a real possibility. For McCaffrey, the next checkpoint is Thursday, when the team hopes to see him work on a limited basis. Until that happens, the only verified conclusion is that both players remain in the frame for a game against Las Vegas — and that the 49ers still have decisions to make before kickoff.