Watkins may participate in training camp and preseason games. The suspension would begin the week of the Sept. 7 regular-season opener against the Tennessee Titans at Arrowhead Stadium. He would be eligible to return after the Chiefs' Sept. 29 Monday night game against the New England Patriots, also at Arrowhead.
Watkins is competing for a backup spot with the Chiefs. He played in three games for the Chiefs last season, starting one. The Chiefs lost three of last season's offensive linemen to free agency but they also signed free-agent Jeff Linkenbach and drafted Zach Fulton and Laurent Duvernay-Tardif.