49ers announce 12 undrafted free agents

In addition to signing nine of 11 draft picks, the 49ers have persuaded a dozen undrafted free agents to join the team. Signing three-year deals with the 49ers are Stanford linebacker Kevin Anderson, Oregon offensive lineman Alex Balducci, Colorado safety Jered Bell, Stanford receiver Devon Cajuste, Arizona State defensive lineman Demetrius Cherry, Utah linebacker Jason…