Free agent running back Andre Brown has been suspended for the first eight games.
Brown was cut by the Houston Texans during training camp.
Brown rushed for 492 yards and three touchdowns last season for the New York Giants.
Brown was suspended four games for violating the NFL performance-enhancing drug policy two years ago, but it was overturned.
Meanwhile, former Minnesota Vikings linebacker Erin Henderson was suspended four games and former Tennessee Titans quarterback Dominique Davis was suspended for one game.
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Aaron Wilson covers the Ravens for The Baltimore Sun
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