Mitchell had surgery Wednesday to repair a torn left Achilles, Jenna Laine of ESPN.com reports.
Placed on IR
The Buccaneers placed Mitchell (Achilles) on injured reserve Sunday, Rick Stroud of The Tampa Bay Times reports.
Suffers torn Achilles
Mitchell was diagnosed with a torn left Achilles tendon after being carted off the field Friday night against the Steelers, Greg Auman of The Athletic reports.
Carted off Friday
Mitchell was carted off with a left-ankle injury during Friday's preseason tilt against Pittsburgh, Greg Auman of The Athletic reports.
Let go by Arizona
Mitchell was cut by the Cardinals on Friday.