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 are getting thinner and thinner at linebacker, as rookie Nick Martin suffered an injury against the Cleveland Browns.

The depth of the San Francisco 49ers, especially on defense, is insanely thin. They cannot afford to have a few players or more on that side of the ball out. U

The middle linebacker opted to sign with Dallas instead of San Francisco last season, but it's all worked out great for both parties.