BALTIMORE, Dec. 11 (UPI) --
The NFL said Baltimore Ravens cornerback Asa Jackson has been suspended for four games for violating its policy on performance-enhancing substances.
The rookie will miss the final three games of the regular season and the fourth game would be Baltimore's first playoff game if the Ravens make the playoffs.
The Ravens have a two-game lead in the AFC North Division.
Jackson has seen action on special teams in the past three games, registering one tackle.
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