Cardinals FS Tyrann Mathieu will undergo surgery to repair his torn left ACL and LCL on Tuesday, December 17.
Monday testing confirmed left ACL and LCL tears for Cardinals DB Tyrann Mathieu.
The Cardinals believe Tyrann Mathieu suffered a torn left ACL in Sunday's Week 14 win over the Rams.
Tyrann Mathieu exited Sunday's Week 14 game against the Rams with a left knee injury and will not return.
Tyrann Mathieu is now officially listed as the Cardinals starting free safety.
Cardinals coach Bruce Arians says rookie DB Tyrann Mathieu is "no doubt" big enough to play free safety full time.
One NFL scout told KTAR Arizona rookie DB Tyrann Mathieu is already "pound-for-pound" the Cardinals' best football player.
Cardinals third-round DB Tyrann Mathieu is practicing at safety in base formations and slot corner in the nickel.
Carson Palmer compares third-round Cardinals DB Tyrann Mathieu to Troy Polamalu.
Third-round pick Tyrann Mathieu is already practicing with the Cardinals' first-team nickel defense at OTAs.
NFL.com's Ian Rapoport reports Cardinals third-round FS Tyrann Mathieu enters the NFL in the league's drug test program.
Cardinals signed third-round FS Tyrann Mathieu to a four-year contract.
Cardinals CB Patrick Peterson is "more than confident" third-round FS Tyrann Mathieu has put his troubles behind him.
The agent for No. 69 pick Tyrann Mathieu disputes a report he's agreed to accept a non-guaranteed contract with the Cardinals.