Carson Palmer is calling it a career.
The Arizona Cardinals quarterback announced his retirement on Tuesday after 15 seasons in the NFL.
"For 15 years I have been lucky enough to play quarterback in the NFL and it has been the most incredible experience of my life," Palmer wrote in a statement. "There wasn't one second that I took it for granted or failed to appreciate what a tremendous privilege it is."
The No. 1 pick out of USC in 2003, he spent seven years with the Cincinnati Bengals and two with Oakland Raiders before joining the Cardinals in 2013. He was selected to three Pro Bowls and led Arizona to the NFC Championship Game in the 2015 season.
Palmer played in just seven games in 2017 due to a broken arm.
His departure leaves Arizona with a significant hole at quarterback. Both Drew Stanton and Blaine Gabbert are set to become free agents, and neither thrived as starter when filling in for Palmer.
On Monday, Cardinals coach Bruce Arians also announced his retirement.