The San Francisco 49ers pulled out more fourth-quarter heroics and used Eddy Piñeiro’s 35-yard field goal as time expired to claim a 16-15 triumph over the Arizona Cardinals.

I know I’ve got to make the kick. If not, I probably won’t be here,” said Piñeiro, Jake Moody’s replacement after the season opener. “I’m just happy I was able to make some kicks and I can be here to enjoy the ride.”

Coach Kyle Shanahan beamed afterward about this shift-on-the-fly squad which now sits alone atop the NFC West.

“I said it to them, and using big words for myself: fortitude, resilience, and character,” Shanahan said. “… It was a (heck) of a job by everybody.”

Quarterback Mac Jones was 27-of-41 for 284 yards with a touchdown and an interception in possibly his final start in place of Purdy, who might b

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