Brock Purdy threw three touchdown passes in his return from a toe injury, Christian McCaffrey had two rushing touchdowns and a receiving score, and the San Francisco 49ers beat the sloppy Arizona Cardinals 41-22.

Eddy Piñeiro hit a 41-yard field goal in overtime before the San Francisco defense stopped Kyren Williams on fourth down with 3:36 to play, and the short-handed 49ers hung on for a thrilling 26-23 victory over the Los Angeles Rams, Mac Jones passed for 342 yards and two touchdowns for the 49ers, who won it in OT after a frantic fourth quarter featuring Piñeiro’s tiebreaking 59-yard field goal with 2:52 left, Williams’ subsequent goal-line fumble and Joshua Karty’s tying 48-yard field goal...