The 49ers have signed cornerback Asa Jackson, according to a team announcement. To make room, the team waived/injured fellow corner Zach Franklin.

Jackson, 27, is best known for his four seasons spent with the Ravens. The former fifth round pick was cycled through Baltimore’s roster last year before being plucked from the practice squad by the Lions. Upon being reunited with Teryl Austin, Jackson appeared in four games with two starts.

Franklin joined San Francisco as an undrafted rookie free agent in May out of Washburn University. In his college career, he appeared in 45 games (34 starts) and recorded 109 tackles, 32 passes defensed, six tackles for loss, two fumble recoveries, and one forced fumble.

Fun fact: Jackson is the fifth Sacramento native on the Niners’ roster, according to Matt Barrows of The Sacramento Bee (on Twitter). If you include DeAndre Carter’s college days at Sacramento State, the count is actually up to six.