Jordan Black, (60), with the rest of the Redskins offensive line. (John McDonnell/The Washington Post)

Washington Redskins tackle Jordan Black is eligible to participate in offseason workouts  despite having one game remaining on his four-game suspension for the use of performance-enhancing drugs, the NFL announced.

Black, a seven-year veteran, was suspended on Dec. 17. The backup tackle contended the positive test stemmed from the use a prescription that he had been taking for a medical condition with the league’s knowledge. Black’s appeal of the suspension was overturned.

Black signed a one-year contract with Washington during training camp last year and appeared in 14 games, playing primarily on special teams but also filling in at left tackle and right tackle. He missed the final two regular season games as well as the Redskins’ playoff game against Seattle.

The league announced that Black still must sit out the first game of the 2013 regular season although he is free to go through offseason workouts, training camp and play in preseason games if he re-signs with Washington or signs with another team.