The San Francisco 49ers are taking on the Jacksonville Jaguars in Week 4 of the NFL season on Sunday, with kickoff set for 1:05 p.m. at Levi’s Stadium.

San Francisco improved to 3-0 last weekend with a tight 16-15 victory over the Arizona Cardinals, marking their third straight one-score game. They face a Jacksonville team that has gone 2-1, most recently beating the Houston Texans 17-10.

It’ll be a challenge for the 49ers, who will be without Nick Bosa among other players, as they get an early test in Week 4.

Here are three keys to a 49ers victory over the Jaguars on Sunday.

Calm down the gunslinging?

San Francisco has relied on its quarterbacks quite a bit to start the season. In fact, I pointed to the need for relying on quarterback play to open things up, which was the case in eac

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