Philadelphia Eagles offensive tackle Lane Johnson has been suspended for the first four games of the season for violating the NFL's performance-enhancing drugs policy.

The fourth pick in the 2013 draft will be eligible to return to the Eagles' active roster Sept. 29. He'll miss games against Jacksonville, Indianapolis, Washington and San Francisco. Johnson started all 16 games and played all but one snap in a solid rookie year.

Johnson is allowed to practice and play in the preseason.