Martin remains in the league's concussion protocol Monday, Matt Barrows of The Athletic reports. Martin was concussed in Week 13 against Cleveland and missed Sunday's win over the Titans. Across seven appearances this season, Martin has logged 15 defensive snaps and another 74 on special teams.

The San Francisco 49ers are getting thinner and thinner at linebacker, as rookie Nick Martin suffered an injury against the Cleveland Browns.

Kyle Shanahan provides key 49ers injury updates on Ricky Pearsall, Spencer Burford, Jacob Cowing and others after the win over the Titans.

It wouldn't be a normal injury report for the 49ers if they didn't have some players ruled out for game day.

The 49ers received some positive news about left guard Spencer Burford, and are hopeful to get several players back at practice

While the 49ers clearly have embraced a youth movement with a handful of rookies playing significant snaps on defense, third-round draft pick Nick Martin has been noticeably absent. San Francisco defensive coordinator Robert Saleh revealed Martin's lack of ...

The San Francisco 49ers signed linebacker Eric Kendricks last week, but he might not play on Sunday due to an injury.

Several players on the 49ers are either being held out or limited for Wednesday's Week 15 practice.

Things are looking good in terms of injuries for the 49ers coming out of a 37-24 win over the Tennessee Titans, but the status of wide receiver Ricky Pearsall Jr. won’t be known until later

The San Francisco 49ers have elevated two players from the practice squad to bolster their defense in Sunday's Week 15 game vs. the Tennessee Titans.