Charlotte, NC (SportsNetwork.com) - The Carolina Panthers added defensive end Frank Alexander to the 53-man roster on Monday.
Alexander takes the place of wide receiver De'Andre Presley, who was placed on injured reserve with a concussion.
Alexander missed the first 14 games for two separate violations -- four and 10 games -- of the NFL's substance abuse policy.
The 25-year-old Alexander had 15 tackles, one sack, one fumble recovery and two passes defensed in 12 games (three starts) last season.
The Panthers will play at the Falcons on Sunday in a winner-take-all game for the NFC South title.