
Jon Weeks is on the San Francisco 49ers' ACTIVE roster, not its practice squad, for the Week 1 game against the Los Angeles Rams on September 10, 2026. The take is WRONG if he appears in that game as a standard practice-squad elevation rather than as an active-roster player, WRONG if a different long snapper is on the active roster in his place, and WRONG if he is not with the organisation at all. This is a claim about which list he is on, not about whether he plays.
The San Francisco 49ers add at least one defensive lineman to their 53-man active roster between September 10 and September 19, 2026 inclusive, Pacific time. Any route counts: a free-agent signing, a promotion from the practice squad, a waiver claim, a trade, or an activation from a reserve list. A STANDARD PRACTICE-SQUAD ELEVATION DOES NOT COUNT, because an elevated player is not signed to the active roster and reverts after the game. The take is WRONG if no defensive lineman is added to the active roster in that window.
San Francisco placed Sam Okuayinonu on injured reserve and signed defensive lineman Khalid Kareem to a one-year deal on Friday, and on Saturday, from Melbourne, signed long snapper Jon Weeks off its practice squad and waived tight end Brayden Willis. Two men off the 53, two on, and the count holds. Matt Maiocco reports Okuayinonu is out indefinitely with a foot injury sustained at Wednesday's practice in Santa Clara, and gives Kareem's two seasons under Raheem Morris in Atlanta as most of the reason he is the replacement. The Weeks signing closes a question that has been open since cut day: San Francisco carried no long snapper on its active roster for six days, and a practice-squad player may be elevated to a game-day roster no more than three times in a season. Kickoff at the Melbourne Cricket Ground is Thursday at 5:35 p.m. Pacific, which is Friday morning there.

The 49ers placed cornerback Nate Hobbs and linebacker Nick Martin on injured reserve Monday and re-signed safety Ashtyn Davis and punter Corliss Waitman to one-year deals. Because Hobbs and Martin were placed the day after the initial roster was set rather than during the cut to it, neither needed one of the two return designations San Francisco had already spent on Christian Kirk and Austen Pleasants, and neither is finished for the year. Both must miss at least the first four games. The earliest either can play is October 11 at Seattle. Matt Maiocco wrote on Sunday that both placements were coming Monday. San Francisco claimed nobody on waivers and lost cornerback Darrell Luter Jr. to Las Vegas and defensive lineman Bryson Eason to Kansas City. Thirteen players are on the practice squad, including long snapper Jon Weeks, who is not on the active roster.
