SEATTLE – Brock Purdy bought time in the pocket, rolled right, and threw up a Hail Mary-esque pass, even if it was only a 4-yard desperation lob.

Jake Tonges, subbing for the injured George Kittle , somehow used all 6-foot-4 of his frame to pull down his first-ever touchdown.

The 49ers had a four-point lead with 1 1/2 minutes remaining in their chaotic season opener. More chaos was coming. So was Nick Bosa.

Bosa recovered a Sam Darnold fumble with 36 seconds remaining inside the 49ers’ red zone to preserve a 17-13 season-opening win. Bosa had pushed Seahawks right tackle Abraham Lucas into Darnold in the pocket, the ball came loose, Bosa pounced on it, and a few minutes later, Purdy skipped off into the visitors’ tunnel with his first win as a $265 million quarterback.

Thus, the 49er

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