The San Francisco 49ers have signed offensive guard Al Netter to a one-year contract.

Netter signed with the 49ers as an undrafted free agent in 2012.

He was on the 49ers' practice squad before being released the following  year.

Netter then spent time with the Tennessee Titans on the practice squad last year before rejoining the 49ers on their pracftice squad last season.

Netter, 24, played collegiately at Northwestern and was an honorable-mention All-Big Ten Conference selection.

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Aaron Wilson covers the Ravens for The Baltimore Sun