One of the San Francisco 49ers' biggest question marks at the start of training camp is at safety where there are a number of options but a few proven answers.
With second-year pro Malik Mustapha still recovering from last year's ACL tear, the Niners can aim for incumbents like Ji'Ayir Brown and Jaylen Mahoney to make a massive leap. Or they can hope at least rookie defensive back Marques Sigle helps make up for Mustapha's absence.
San Francisco can also bank on two of its offseason free-agent pickups, Richie Grant and Jason Pinnock, stepping up to fill the voids.