The 49ers (6-9) placed left tackle Trent Williams on injured reserve Thrusday, the result of an ankle injury that will have sidelined him their final seven games this season.

To replace the open roster spot left by Williams' move to IR, the 49ers signed offensive lineman Matt Hennessy to a two-year contract. Hennessy has appeared in 45 games over the last four seasons with the Atlanta Falcons and started all 17 games for Atlanta in 2021 at center.