Former LSU football star called it a career this week, announcing his retirement from the NFL. Mathieu was a Heisman finalist while at LSU.

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.

After Tyrann Mathieu announced his retirement, Chiefs QB Patrick Mahomes sent some kind words to his former teammate.

The New Orleans Saints got three truly impressive seasons out of Tyrann Mathieu, and as he retires, take a look back at each INT he took away.

A former Arizona Cardinals player who was key during their run of success in the middle of the 2010s has called it a career. Safety Tyrann Mathieu, originally drafted by the Arizona Cardinals, announced his retirement from the NFL after 12 seasons. He made the announcement on his Instragram account.

Mathieu’s NFL career came to a surprising end Tuesday afternoon when he announced his retirement on the eve of start of Saints’ training camp. His retirement leaves a hole at the safety position, giant shoes for someone to try to fill. This would have been Mathieu’s fourth season with the Saints and his 13th in the NFL.

The NFC South is home to many talented safeties, and that's true even after Tyrann Mathieu retired. How does his departure change our rankings?

Matthieu decided to call it quits after a fantastic 12-year career, which included three Pro Bowls and a Super Bowl ring. He looked set to begin his fourth year with the Saints after not missing a game in his first three, but the 33-year-old decided it was time to move on.

Tyrann Mathieu is a beloved Louisiana football legend, and all of that came back to the surface on Tuesday afternoon when the New Orleans Saints safety announced his retirement from the NFL after 12 seasons on social media.

Mathieu logged 36 interceptions, seven forced fumbles and 838 tackles in his career with the Cardinals, Chiefs and Saints.