SANTA CLARA -- The 49ers have added another cornerback, and another knee-rehabilitating player: Florida Atlantic cornerback Keith Reaser.

Reaser, selected in Saturday's fifth round at No. 170 overall, had a second surgery Feb. 27 to replace the anterior cruciate ligament he tore in his left knee in October.

"I'm making pretty good progress, so I'm just going to work with the 49ers doctors from here and keep the progress going," Reaser said.

Doctors at the Indianapolis scouting combine were concerned with his initial ACL replacement, and upon visiting Dr. James Andrews, Reaser learned his body rejected the ACL grafted from a cadaver. That resulted in a follow-up surgery where Andrews used a graft from Reaser's patellar tendon.

The 5-foot-10 cornerback joins a secondary that's also brought in first-round pick Jimmie Ward (Northern Illinois) and fourth-round selection Dontae Johnson (North CarolinaState).

Reaser said he was clocked at "a slow 4.32" seconds in the 40-yard dash at Florida Atlantic's 2013 pro day. "I'm definitely going to get back to that, even faster," said Reaser, who has experience returning kicks.

The 49ers have made a habit of drafting players coming off ACL tears, including offensive lineman Brandon Thomas in Friday's third round as well as last year's selections of defensive tackle Tank Carradine and running back Marcus Lattimore.

"I'm going to go at the speed doctors tell me where to go," Reaser added.


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