San Francisco 49ers defensive lineman Demarcus Dobbs has been suspended for Week 1 against Green Bay for a violation of the NFL's substance abuse policy.
The 49ers, in announcing the penalty Wednesday jointly with the NFL, say Dobbs will be eligible to return to the active roster on Sept. 9, a day after the reigning NFC champion Niners' season opener at home against the Packers. He can still practice with the team, attend meetings and other activities.
Dobbs ended last season on injured reserve with a right knee problem.
He was arrested Nov. 30 - his 25th birthday - for suspicion of driving under the influence and possession of marijuana.
The third-year pro had seven tackles in 12 games last year.