The San Francisco 49ers thrive on mayhem. At least that’s how it felt for the third consecutive week on Sunday as they came from behind in a 16-15 victory over the Arizona Cardinals to improve to 3-0 on the season.

It was a back-and-forth battle throughout, and the 49ers were in a precarious spot down 15-13 after a holding penalty forced a safety and gave Arizona the ball with 3:15 remaining in the game.

But, after an impressive defensive stop, backup quarterback Mac Jones led the 49ers down the field and Eddy Piniero hit the game-winning 35-yard field goal to get San Francisco a huge divisional victory in their home opener.

Here are three quick takeaways from San Francisco’s 16-15 win over the Cardinals on Sunday.

Let Mac Cook

Ahead of the game, one of my keys to the game was to Let

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