The Arizona Cardinals announced Tuesday that they've placed rookie safety Tyrann Mathieu on season-ending injured reserve and elevated safety Curtis Taylor to the active roster from the practice squad.
Mathieu tore his ACL and LCL on a kickoff return in Sunday's win over the St. Louis Rams. The rookie overcame a host of off-the-field issues that led to his dismissal from the LSU football team to become one of the league's most productive rookies.
Mathieu is a leading candidate for the NFL's Defensive Rookie of the Year award. He's recorded 68 tackles to go along with nine pass deflections and two interceptions. He also forced a fumble and started 11 of the Cardinals' 13 games.
Taylor has played in 12 NFL games after being selected in the seventh round of the 2009 draft by the San Francisco 49ers. The LSU product has been on the Cardinals' practice squad all season.