The San Francisco 49ers released their first unofficial depth chart ahead of their preseason opener against the Tennessee Titans. AdvertisementAdvertisement AdvertisementHere's a look at the depth chart that was released and put together, courtesy of the 49ers communications staff:Let's start at wide receiver, in an attempt to break up how each player is being used. The depth chart has Demarcus Robinson, Deebo Samuel, and De'Zhaun Stribling in the same cluster. The 49ers were always going to lean on a veteran at left guard. If that's the case, will we see Upton Stout take reps at safety during the preseason?