49ers rule out DL Arik Armstead vs. Rams

© Stan Szeto-USA TODAY Sports After dealing with injuries early in his career, Armstead has been a beacon of health with zero games missed the last three years. Missing one practice isn’t a huge deal, but his absence was because of a groin issue. Those injuries can linger if the team isn’t careful. It wouldn’t be a surprise to see Armstead sit a couple days until that ailment is fully healed. San Francisco’s needs Armstead’s versatility and pass rushing ability on the interior if their defense is going to reach its ceiling in 2021.

The injuries keep piling up for the 49ers. Defensive tackle Arik Armstead, who was questionable with a foot injury going into Monday’s game, was ruled out in the fourth quarter because of a foot injury.

San Francisco is now missing both of their starting interior defensive linemen with Javon Kinlaw ruled out before the game and now Armstead joining him on the sideline.

Armstead is dealing with plantar fasciitis that left him out of Week 3 against Denver. There’s no word on whether that’s the reason he left Monday’s contest.

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