The Las Vegas Raiders have placed starting defensive end Malcolm Koonce on injured reserve due to a knee injury sustained during practice. Koonce, who had a career-best season with 8.0 sacks, may miss the entire season. In his absence, the Raiders have elevated Charles Snowden from the practice squad to join Maxx Crosby and other edge rushers. The team is adopting a 'next-man-up' mentality as they prepare for their season opener against the Los Angeles Chargers.

• Malcolm Koonce's injury is a significant loss for the Raiders' defense.
• Charles Snowden's elevation indicates the team's confidence in their depth at defensive end.
• Tyree Wilson is expected to step up after a challenging rookie season.