San Francisco 49ers are juggling four quarterbacks at start of camp after injuries derailed season
Starter Brock Purdy is only participating in two out of every three practices to start San Francisco 49ers' camp as he works his way back from offseason elbow surgery. That has allowed Trey Lance and Sam Darnold to split time with the first and second-team offences when Purdy is sitting and share time as second-teamers when Purdy practices.