The Broncos began the preseason with a 30-9 win on Saturday against the San Francisco 49ers. Here are grades for the Denver victory:

Offense

Starting quarterback Bo Nix led three drives, completing 6-of-11 passes for 31 yards and gaining four first downs. He also got called for a safety for an intentional grounding penalty in the end zone. The positive spin? Nix rebounded to lead a field goal drive on his final possession. Backup QB Jarrett Stidham led two touchdown drives before halftime with scoring passes to tight end Lucas Krull and wide receiver Trent Sherfield. Third-string quarterback Sam Ehlinger closed with a touchdown pass to tight end Caleb Prieskorn.

Grade: B-

Defense

Denver’s starting defense gave up a touchdown on the opening drive against the 49ers’ backup offense. Bron

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