The trickle-down of Stephenson's suspension could also impact the number of offensive linemen the Chiefs keep when they go through roster cuts. Teams must trim from 90 players to 75 by Tuesday afternoon,
Cheap Baseball Jerseys, and final cuts to the 53-man roster limit are due Sept. 30.
Stephenson said in a statement issued through the NFL Players' Association that he took a medication that requires a therapeutic-use exemption and failed to properly investigate it.
"We don't make any excuses for them," offensive coordinator Doug Pederson said. "Guys just have to focus in on detail. They get in the heat of the battle and sometimes they get a little fatigued and into the game, but they still have to concentrate and understand how we're snapping the ball, when we're snapping the ball. We need to eliminate those types of penalties, the holding penalties and obviously the sacks and turnovers."
The substance was not disclosed. The Chiefs said in a three-sentence statement that they were informed of the positive test on Friday and expressed disappointment in losing Stephenson, but declined further comment.
"We're rotating people around and we'll keep doing that," Chiefs coach Andy Reid said. "When we're satisfied with who the five best are we'll roll from there. I don't really care about positions right now. I just care about getting the five best out there."
"The rules are strict, and without a TUE, the consequence is a four-game suspension," Stephenson said in the statement. "It is not a mistake I will ever make again. I will train extremely hard during my time away from the team and I will be ready to contribute to my team's effort to win a Super Bowl as soon as I return."
KANSAS CITY, Mo. (AP)