The Cardinals confirmed what was expected, that quarterback Carson Palmer tore his ACL during Sunday's win over St. Louis.

This ends Palmer's seasone early, just after he signed a new contract worth $50 million. Palmer was carted off of the field following the injury. Down by four, backup Drew Stanton came in and scored the go-ahead touchdown. Then the defense took over and led Arizona to a 31-14 win in a game that was much closer than the final score indicated.

Palmer was made available to local reporters on Monday to comment on the injury. He said he knew he'd torn his ACL the moment he went down.

"I knew right away. I didn't need an MRI," Palmer said, via the team's official site. "Knew going off on cart it'd be the last play this season."

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