The 49ers have signed OL Michael Dunn and WR Malik Knowles to one-year deals. In order to make room on the roster, the team released DL Demone Harris and waived/injured RB Corey Kiner.

San Francisco 49ers head coach Kyle Shanahan provided several injury updates following Saturday's preseason victory over the Las Vegas Raiders at Allegiant Stadium. Right guard Dominick Puni left the ...