The Baltimore Ravens have lost a significant part of their defense, and the owner of one of the most memorable big-man interceptions of all time, as defensive tackle Michael Pierce announced his retirement Wednesday following a nine-year NFL career.

Longtime Baltimore Ravens nose tackle Michael Pierce is retiring after eight seasons -- and one memorable interception. "After much prayer, talking to my family, going through the grind and being satisfied with where I am,

Ravens nose tackle Michael Pierce announced his retirement on Wednesday after eight seasons in the NFL, including seven with the Ravens.