Chiefs offensive tackle Donald Stephenson has been suspended by the NFL for the first four games of the regular season for violating the league's policy on performance-enhancing substances.
Stephenson was a fill-in starter last season but was expected to anchor the right side of the line this year
He remains eligible to participate in all preseason practices and games, including Saturday night's game against Minnesota.
Stephenson will miss games against Tennessee, Denver, Miami and New England, and be eligible to return to the active roster Sept. 30. The Chiefs play San Francisco the following Sunday.
The Chiefs were already without wide receiver Dwayne Bowe for the season opener after he was suspended by the league for an incident involving marijuana last November.