Marcell Dareus has been suspended for the first game of the 2015 season for a violation of the NFL's substance abuse policy.
Dareus has become one of the NFL's best defensive tackles during his tenure with the Buffalo Bills.
"Last year, I made a mistake involving possession of a banned substance," Dareus said in a statement. "The NFL's discipline for this conduct is part of the drug policy, and I apologize to my family, my teammates, the entire Bills organization and Bills fans that I will miss one game as a result of my mistake. I will work intensely that week and will be extremely happy to contribute to a win in week two for the Bills."
Last May, Dareus was arrested for felony possession of a controlled substance and possession of drug paraphernalia. He was also picked up that month for reckless driving.