Elvis Dumervil: “Of course I’m frustrated”

Broncos defensive end Elvis Dumervil led the NFL with 17 sacks in 2009. He has zero since then. He’s not happy about that. “Sacks are what my position is about,” Dumervil told the Denver Post. “Sacks are the stats, sacks are what I do. Of course I’m frustrated, but it’s not the tough things that…