A "frustrated" Mark Davis said he stands behind general manager Reggie McKenzie and new interim head coach Tony Sparano as the Oakland Raiders try to bounce back from a 0-4 start and the firing of coach Dennis Allen. However, Davis said it is imperative the Raiders improve. "The way we were losing was frustrating," the Raiders owner said after the news conference to announce Allen's firing and Sparano hiring for the rest of the season. "I think it's just the way we lost some of the games, yeah, I think we weren't in them. To me, that's not what the Raiders are ... In my analysis, I think we do have players that can play in this game. And I just think that there may be some changes in how the schemes are utilized. Dennis is the one who has taken the fall for it." Read more http://espn.go.com/nfl/story/_/id/11618397/tony-sparano-named-oakland-raiders-interim-head-coach