Last week, the Las Vegas Raiders dropped a very winnable game to the Tennessee Titans.

It was a brutal look at how far off Las Vegas is from where the team thought it would be. Part of the problem has been the lackadaisical third-down conversion rate. Against the Titans, the Raiders went 1-for-12 on third down, picking up six penalties, all of which were produced by the offensive line.

To win, that group needs to be better.

"That’s so below the standard you need,” a source said to Pro Football Focus.

Where the problems exist 

Yet, the offensive line isn't alone in its struggles. The linebackers haven't been productive, and neither has the secondary. Those issues fall squarely on head coach Josh McDaniels.

"This team, if you look really closely, is not set up right to succeed,” a league source said to PFF. “It’s going to take time and patience and getting more of the players that Josh and Dave want in there before they can really be competitive. They’re in a loaded division that has great quarterbacks and they inherited a mess. There are a lot of good reasons why Mayock and Gruden are no longer there. This is a heavy-lifting job for Josh and Dave. It’s not a quick-fix situation. The owner, Mark Davis, understands that and is on board with what they’re doing. It’s hard to watch right now, though."

Heading into Sunday's matchup with Denver, the Raiders need to square away the pressing issues in the position groups if they want to capitalize on a Denver team that hasn't looked good to this point in the season.

"There’s a lot of things we have to do better as coaches and players and that’s what we’re going to focus on,” McDaniels said during a press conference. “Losing gets old, fast. These guys, they compete hard. They play hard and coaches coach hard, but you have to earn it. We’ve got to learn how to start well, play well in the middle and finish well, and right now we’ve not figured out that formula yet.”

Related Las Vegas Raiders reading 

"Why there is no reason to worry about Derek Carr and Davante Adams." 

"Josh McDaniels explains how the Raiders will win Sunday." 

Feature image via Christopher Hanewinckel-USA TODAY Sports