SANTA CLARA (AP) Jimmy Garoppolo threw a 5-yard touchdown pass to Dante Pettis with 1:15 remaining and the San Francisco 49ers overcame five turnovers to beat the Pittsburgh Steelers 24-20 on Sunday for their first 3-0 start in 21 years.
The Niners gave the ball away four times in the first half and then lost a fumble again in the fourth quarter, but still managed to pull out the victory and spoil Mason Rudolph's first career start in place of the injured Ben Roethlisberger for the Steelers (0-3).
Rudolph threw two long touchdown passes in the second half, connecting on a 76-yarder to JuJu Smith-Schuster and a 39-yarder to Diontae Johnson that gave the Steelers a 20-17 lead in the fourth quarter.
The Niners answered the first strike with a 75-yard touchdown drive capped by a 4-yard run by Jeff Wilson Jr. and appeared poised to do the same when they drove inside the 10 following the second score.
But on third down from the 7, a shotgun snap hit receiver Richie James Jr. as he went in motion and T.J. Watt recovered the fumble for Pittsburgh on San Francisco's third red-zone turnover of the game.
The Steelers then gave it right back when James Conner was stripped by Arik Armstead and DeForest Buckner recovered at the 24. After a third-down holding penalty on Mark Barron extended the drive, Garoppolo found Pettis for the go-ahead score.
Pittsburgh was unable to generate a first down on the ensuing drive with Rudolph taking a sack on third down and throwing an incompletion on fourth to send the Steelers to their second 0-3 start since 2000.
Garoppolo finished 22 for 32 for 277 yards. He threw two interceptions on the first three drives on passes that hit his receivers' hands and also lost a fumble on a bad snap from center by Weston Richburg with the Niners inside the Pittsburgh 10.
Rudolph finished 14 for 27 for 174 yards, throwing an interception to K'Waun Williams on the opening drive of the second half to set up Wilson's first touchdown.