ST. LOUIS (AP) -- Greg Zuerlein kicked a 48-yard field goal with 40 seconds left as the Rams completed a fourth-quarter comeback for a 27-24 victory over the Cardinals on Sunday.
It was Zuerlein's fourth field goal of the game.
Larry Fitzgerald caught two touchdown passes from new quarterback Carson Palmer, and the Arizona defense also scored a touchdown.
The Cardinals, under new coach Bruce Arians, had an 11-point lead after Fitzgerald's 24-yarder late in the third quarter.
Jared Cook had two touchdown catches in his Rams debut. The tight end fumbled a potential third TD, a 55-yarder that would have opened the scoring, when rookie Tyrann Mathieu chased down the play and punched the ball free at the 8-yard line, with the play resulting in a touchback.