San Francisco 49ers kicker Eddy Piñeiro, center, celebrates his game-winning field goal after an NFL football game against the Arizona Cardinals, Sunday, Sept. 21, 2025, in Santa Clara, Calif.

The San Francisco 49ers made clutch plays at the right time in their Week 3 win. Matt Maiocco delivers team grades for the performance.

The San Francisco 49ers are unbeaten and alone in first place, but a pall hangs over the team after Nick Bosa became their latest star to be forced off the field by an injury.

The 49ers (3-0) won their home opener 16-15 on Eddy Pineiro’s walk-off field goal against the Arizona Cardinals.

The San Francisco 49ers had to finish the end of their contest against the Arizona Cardinals without a key piece of the defense.

The San Francisco 49ers have dealt with plenty of offensive injuries this year, but the defense is taking several hits in Week 3.

When you think of the 49ers, you think of them being a top-heavy team. The roster lacks quality or trusted depth, and they lean on their stars to win games. However, through three games, a lot of their big names have been up and down.

Quarterback Mac Jones, already serving in relief duty for the injured Brock Purdy, told reporters after Sunday's 16-15 win over the Arizona Cardinals that he reaggravated the same PCL sprain that hampered him during training camp.

Before he reached the San Francisco 49ers, Mac Jones would dwell on mistakes and let games get away from him. Sunday's win owed something to his learning to forget.