ST. LOUIS (AP) - St. Louis Rams starting linebacker Jo-Lonn Dunbar has been suspended four games for violating the NFL's policy on performance-enhancing drugs.
Dunbar, who was second on the team with 157 tackles last season, is able to participate in all team activities prior to suspension, which begins with the season-opening game against Arizona.
He will be able to practice and play in all exhibition contests.
Dunbar will also miss games against Atlanta, Dallas and San Francisco.
The 6-foot, 235-pounder Dunbar is the second St. Louis player suspended by the league this season. Running back Isaiah Pead will miss the opening game for violation of the substance abuse policy.