There wasn’t a lot to learn from the 49ers’ 30-9 exhibition loss Saturday night to the Denver Broncos. Denver basically had its way with the 49ers’ reserves at Levi’s Stadium.

Mac Jones is excited for the challenge to grow with San Francisco's offense after making his debut with the team Saturday.

San Francisco 49ers quarterback Mac Jones began his new chapter in red and gold by leading a touchdown drive to open the game. The 49ers opened their preseason with a 30-9 defeat to the Denver Broncos on Saturday evening.