There's no clarity yet on which quarterback will start for the San Francisco 49ers in their final preseason game.

The San Francisco 49ers were absolutely ravaged by injuries last season, which played a massive role in their disappointing 6-11. And once again this summer, the 49ers are once again experiencing medical issues. So, what is the reason behind San Francisco's inability to stay healthy? Is there a deeper problem here?

The 49ers are contemplating placing Givens on IR to start the year. Shanahan said the team has several decisions to make on IR slots. Guerendo has missed most of camp with a shoulder injury. He returned Tuesday and Shanahan explained some of the reason for the second-year RB's extended absence.