49ers place Drake Jackson on IR, announce other roster moves ahead of Jaguars game

The San Francisco 49ers have announced roster moves ahead of their game against the Jacksonville Jaguars. The team has made the following moves:

• DE Drake Jackson has been placed on IR (injured reserve).
• CB Shemar Jean-Charles has been elevated to the active roster from the team's practice squad.
• WR Willie Snead and LB Curtis Robinson have been activated from the practice squad (standard elevation).

Jackson has seen his playing time drop since the acquisition of Randy Gregory and has reportedly been dealing with a knee injury. Jackson had three sacks in the first game of the season but has been less productive in recent weeks. Jackson will be ineligible for at least four games. Jean-Charles will take Jackson's place on the roster.

This is the third standard elevation to the active roster for both Snead and Robinson. Both are standard elevations, meaning they are only active for the game. They revert back to the practice squad afterward.

Additionally, the 49ers announced on Monday that the team had opened the practice window for Samuel Womack III, Darrell Luter, Jr., and Robert Beal, Jr. The 49ers have three weeks to decide whether or not to add each player to the active roster or shut him down for the season. Newly acquired edge rusher Chase Young also practiced with the team for the first time on Monday.

Deebo Samuel returned to practice and will play on Sunday. Meanwhile, Trent Williams is listed as questionable and will likely be a game-time decision. If Williams is unable to play, Jaylon Moore will again take his spot. Aaron Banks has already been ruled out. Jon Feliciano will start in Banks' place.

Kyle Shanahan said on Friday the plan was to get Feliciano, who has started 46 games in his NFL career, some playing time, even before the injury to Banks. "We were going to start playing him a little bit just to get him in there regardless because of how consistent he has been," Shanahan said. "Then this happened with Banks, so now he's got his opportunity, but we've been real happy with Jon."

The 49ers, coming off of a bye, look to break a three-game losing streak and improve to 6-3.