Bills sign rookie free-agent DB Unamba

The Buffalo Bills have signed rookie free agent defensive back

Don Unamba.

The signing was announced Wednesday, after the Bills completed

their fourth day of training camp in suburban Rochester.

Listed at 6-foot-1 and 192 pounds, Unamba initially signed with

St. Louis following the NFL draft before being cut by the Rams in

June. He played college at Southern Arkansas, where he had three

interceptions and a school-record 17 pass breakups in 11 starts

last season.

The Bills return to practice on Friday.