The San Francisco 49ers promoted linebacker Chase Thomasto the active roster from the team's practice squad on Saturday. The roster now stands at 53. 

Thomas originally signed with the New Orleans Saints as an undrafted rookie free agent on April 28, 2013. He was waived by the Saints on August 19, 2013, and acquired off of waivers by the Oakland Raiders on August 20, 2013, before being released on August 31, 2013. He was added to the Atlanta Falcons practice squad on September 17, 2013, where he spent the remainder of the season. Thomas signed a Reserve/Future contract with the Green Bay Packers on January 7, 2014, and was later released on May 12, 2014.

Thomas then signed a two-year contract with the 49ers on May 27, 2014. He was waived by San Francisco on August 30, and was signed to the team's practice squad a day later.

A 24-year-old native of Marietta, GA, Thomas attended Stanford University, where he played in 53 games and tallied 229 tackles, 50.5 tackles for loss, 27.5 sacks, nine forced fumbles, four fumble recoveries and two interceptions for the Cardinal. During his senior season in 2012, he recorded 71 tackles, 7.5 sacks, two fumble recoveries, one forced fumble and one interception in 14 games played.

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