Von Miller busted for amphetamines and marijuana, suspended four games
Unfortunately for Miller and the Broncos, a failed drug test from Miller's rookie season will make it difficult to reach that 18.5 sack mark in 2013. Miller has been suspended four games for violating the league's substance abuse policy. He tested positive for amphetamines and marijuana back during his 2011 rookie campaign.
Miller had already tested positive for marijuana before coming into the league, so this violation will result in a four-game ban. If Miller were to test positive again, he'd be suspended for an entire season.
It is unclear as to why the league waited so long to suspend Miller for a failed test taken almost two years ago, but it appears as if the suspension will stick. Miller is in the process of appealing the ban, but reports say he'll have a difficult time winning that appeal.
Veteran linebacker Shaun Phillips will now step into the starting lineup for the Broncos. Though his skills have declined at the age of 32 and he is a significant downgrade from Miller, Phillips did manage 9.5 sacks last year and is a solid replacement.
That being said, 9.5 is still just barely more than half of Miller's 18.5 mark, so the Broncos' defense is sure to feel the effect of their All-Pro linebacker's absence.