Cardinals' Mathieu tore ACL

Arizona Cardinals rookie safety Tyrann Mathieu tore his anterior cruciate ligament and lateral collateral ligament on Sunday, according to multiple reports.

A magnetic resonance imaging exam Monday confirmed the initial diagnosis from Sunday.

Mathieu got hurt returning a free kick following a safety and was carted off the field.

This ends a promising season for the former LSU standout.

Mathieu has recorded 63 tackles, two interceptions and one forced fumble.

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Aaron Wilson covers the Ravens for The Baltimore Sun.

Aaron Wilson
Aaron Wilson covers the NFL for National Football Post, his second stint at the Post. He has previously written for Pro Football Talk and FOX Sports-Scout. Entering his 13th year covering the Baltimore Ravens, he's a beat writer for The Baltimore Sun. Wilson has also covered the Jacksonville Jaguars and Tennessee Titans.

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