Oakland 's defense surrendered the seventh most yards per game in 2016 .
Oakland 's defense have plenty to look forward to next season with an explosive offense and the return of the NFL 's Defensive Player of the Year , defensive end Khalil Mack .
Oakland 's defense surrendered the seventh most yards per game in 2016 , but have plenty to look forward to next season with an explosive offense and the return of the NFL 's Defensive Player of the Year , defensive end Khalil Mack .