SANTA CLARA -- The 49ers reshuffled the bottom of their wide-receiving corps Tuesday, promoting former Cal receiver Chris Harper to the active roster and releasing Keshawn Martin, who hadn’t been active for a game since fumbling a kickoff against the Bills on Oct. 16.
The 49ers filled the practice-squad space that Harper had occupied with rookie receiver Mose Frazier, who played at Memphis and who was signed as an undrafted free agent by the Broncos in the offseason.
Harper (5-11, 185) was on active roster for the 49ers’ Week 1 win over the Rams. After being waived September 13, he was re-signed to the practice squad on September 15.