The hits keep on coming for the Buffalo Bills. Just when you thought that injuries to 2016 first round draft pick Shaq Lawson (shouder) and second rounder Reggie Ragland (ACL) were a big enough blow to the Buffalo Bills defense, the biggest blow of all had yet to be landed. It is being reported by league sources that star defensive tackle, Marcell Dareus, is facing a four-game suspension for another violation of the NFL's substance abuse policy. Dareus could appeal the suspension. The 26-year old first round draft pick from 2011 also missed the season opener last season for a substance abuse violation. Dareus is Buffalo's best defensive player and just signed a six year extension worth more than $100 million in 2015. Dareus could join on the bench Bills running back, Karlos Williams, who's suspended for the first four games of the year for a substance abuse charge, as well as linebacker Manny Lawson who faces a domestic charge from last year.