Apple elevated from the 49ers’ practice squad ahead of Week 4 versus Jacksonville, giving San Francisco veteran depth at cornerback behind Renardo Green, who is dealing with a neck issue and listed questionable. Green played 86% of snaps last week but was limited in practice. The WR group isn’t being boosted with an elevation, as Demarcus Robinson and Jauan Jennings are the primary targets with Pearsall likely to play if limited.

Keith the depth chart: Deommodore Lenoir, Darrell Luter Jr., Chase Lucas and Upton Stout provide cover in the secondary, while Pearsall, Jennings, Robinson, Skyy Moore and Marques Valdez-Scantling headline the Week 4 receiving corps. Levi’s Stadium hosts the 1:05 p.m. kickoff against the Jaguars.

The San Francisco 49ers made key roster adjustments ahead of their crucial NFC West matchup against the Seattle Seahawks.

Defensive end Yetur Gross-Matos has been activated from the injured reserve after recovering from knee surgery and is set to return to action. Meanwhile, punter Mitch Wishnowsky is likely heading to IR due to a persistent back injury that has troubled him since training camp.

To fill Wishnowsky's spot, Pat O'Donnell has been promoted from the practice squad. Additionally, Tashaun Gipson and Nick McCloud have been activated from the practice squad, while Darrell Luter Jr. joins Wishnowsky on IR. Offensive lineman Jon Feliciano's status has also been downgraded to out for the game.