49ers Injury News: Linebacker Shayne Skov Lands on IR, Safety Marcus Ball Promoted

The San Francisco 49ers lost backup linebacker Shayne Skov to a knee injury for the rest of the season. San Francisco then promoted safety Marcus Ball from the practice squad and signed linebacker Wynton McManis to take his spot.

San Francisco 49ers linebacker Shayne Skov suffered a knee injury during the team’s 31-24 loss to the Miami Dolphins in Week 12, and he will be out for the rest of the season and lands on injured reserve.

The Niners announced the move on Tuesday morning, via the team’s website.

Skov, an undrafted free agent out of Stanford, has primarily appeared on special teams for San Francisco over the last two years. He appeared in nine games this season, logging two assists, before the injury.

To fill the open roster spot, the Niners promoted defensive back Marcus Ball from the practice squad.

Ball entered the league as a UDFA in 2014, signing with the New Orleans Saints. He appeared in 12 games that year and also logged one more with the Carolina Panthers this season before being released. San Francisco signed Ball to its practice squad on November 22.

This move might help alleviate depth concerns now that veteran safety Eric Reid (bicep) is also on injured reserve.

The Niners also signed free-agent linebacker Wynton McManis to the practice squad to replace Ball.

McManis, 6-foot-1 and 225 pounds, was another Niners UDFA from 2016. The former Memphis product was released by the 49ers during the preseason. He’ll likely be used solely as a depth option and can be promoted if San Francisco has another injury at the inside linebacker position.

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