San Francisco 49ers coach Kyle Shanahan was impressed by undrafted rookie Sebastian Valdez in Saturday's preseason game.

Henningsen, 26, was expected to compete for a reserve role along the Broncos' vaunted defensive line, rotating behind starting DE Zach Allen and primary backup, third-round rookie Sai'vion Jones, who ...

Understandably, 49ers HC Kyle Shanahan wasn't best pleased with the offense after the blowout 30-9 preseason loss to the Denver Broncos.