Three-time All-Pro safety Tyrann Mathieu announced in a post on his Instagram page that he is retiring from the NFL. The 33-year-old defensive back was entering his fourth season with the New Orleans Saints but won't step onto the field this year.

New Orleans Saints defensive back Tyrann Mathieu announced Tuesday that he is retiring from the NFL after 12 seasons and three first-team All-Pro selections. The 33-year-old Mathieu, a product of LSU, spent the last three seasons with the Saints and started in all 51 regular season games.

Tyrann Mathieu announced his retirement from the NFL. Mathieu played 12 NFL season, including five with the Cardinals. PHOENIX - Former Arizona Cardinals safety Tyrann Mathieu took to social media on Tuesday to announce his retirement from the NFL.