Tempe, AZ (SportsNetwork.com) - The Arizona Cardinals placed quarterback Carson Palmer on season-ending injured reserve Tuesday.
The move comes one day after Cards coach Bruce Arians confirmed Palmer tore the anterior cruciate ligament in his left knee when he was sacked by Rams safety Mark Barron early in the fourth quarter of Arizona's 31-14 win over St. Louis on Sunday.
Drew Stanton threw a late touchdown pass in relief of Palmer, helping the Cardinals improve to 8-1 and remain perfect in five home games this season. Stanton will be under center for the Cardinals the rest of the year.
Palmer, who missed three games earlier this season with a shoulder injury, had reconstructive surgery on the same knee in 2006 as a member of the Bengals. Both of his ACL tears came just days after signing lucrative contract extensions.
On Dec. 29, 2005, Palmer agreed to a six-year extension with Cincinnati. Ten days later, the Bengals met Pittsburgh in the first round of the AFC playoffs and Palmer lasted just one play, injuring his knee on a 66-yard pass to rookie Chris Henry.
Palmer signed a three-year, $50 million contract extension with Arizona last Friday.
Arizona signed quarterback Ryan Lindley off the San Diego Chargers' practice squad to fill the spot on the active roster.
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