Dennis Allen goes over Raiders' tape

Oakland Raiders coach Dennis Allen spoke to reporters on a conference call Saturday afternoon in the wake of Friday night's exhibition opener at the Minnesota Vikings, a 10-6 loss.

After watching the game tape, Allen broached several topics. A sampling:

On the Raiders' 13 penalties:: "A couple of those are this year's points of emphasis with the NFL and with the officials with defensive holding or illegal contact down the field. That's an area that we have to get cleaned up. Illegal hands to the face is another area that they're emphasizing. We had basically two of those. Brian Leonhardt was called for a facemask. That was one of those where you have two guys battling and his hand kind of slips off and grabs a guy's facemask. That's something that I don't know that in the past that you would have seen some of these things called, but with the rules and points of emphasis, we're going to see those things."

On what Latavius Murray brings that is different than Maurice Jones-Drew and Darren McFadden: "Latavius is a big, powerful back that really also has exceptional speed. When he gets out into the open, he has an opportunity to take the ball the distance. I thought he ran the ball hard in the game ... I thought he did a pretty good job, for the most part, of making the right reads and putting the ball where it needs to go in the run game."

On the play of the new starting cornerbacks, who seemingly played off the ball and paid for it early:: "I think overall it was positive. Obviously, when the first drive -- the thing you look at is a couple of those throws to Cordarrelle Patterson, there's some tight-window throws and contested catches and that's what you want to see because I feel like if you continue to contest those plays, you're going to get your fair share of them."

On which younger players jumped out to him on film: "I thought Shelby Harris did some good things in the game. I thought he got a little tired late, but I thought kind of in the middle of the game, I thought he did some really good things. He was able to get some pressure on the quarterback, had a sack-fumble. I thought TJ Carrie played well in the defensive backfield. I thought [Ricky] Lumpkin did some good things in there as a defensive lineman -- great technique. Some of the guys down that are battling for spots on that 53-man roster, I thought I saw some good things out of them."

On the play of new quarterback Matt Schaub: "I was pleased with what I saw out of Matt Schaub. I mean, two of the third-down throws, you know, he tries the back-shoulder throw down the middle to Mychal Rivera and that's a catch that he's made consistently in training camp. The corner route on a third down was an outstanding throw in a tight window against Cover 2 and Mychal again wasn't able to come up with that play. We had a miscommunication on the first third down of the game where he was trying to get the ball to Andre Holmes, and those are some of the things that show up in the first preseason game that we get a chance to look at it, we get a chance to correct, coach it up, and hopefully we'll be able to improve on that. I was not displeased with Matt Schaub's performance. We obviously need to play better and we need to be more consistent. But again, I thought there were some things that we can build on."

On whether rookie quarterback Derek Carr would get any reps with the first-team offense this preseason: "Yeah, it's not really part of the plan right now. We'll obviously evaluate everything as we move along, but the plan is to work Matt Schaub as the starting quarterback and I think he's done a good job in doing that."

On the play of top draft pick Khalil Mack, who had two tackles, one for a loss: "I think you saw a guy that is a rookie that was playing in his first game. A couple of times we activated him on rushes and he was able to cause some disruption. But then there were some times where, a little bit in the run game and a little bit in the pass game, he is just a little bit late in reacting to his responsibility. I think that's a guy that is playing in his first NFL game ... I don't want them doing a whole lot of thinking. I want them just really basically reacting to what they see and go play football."

Also, rookie defensive tackle Justin Ellis suffered a concussion in the game, taking a knee to the head, and is going through the NFL's concussion protocol. ... Oakland practices at 3 p.m. PT Sunday in Napa. ... The Raiders break camp Monday morning before traveling to Southern California for two practices with the Dallas Cowboys on Tuesday and Wednesday. ... Oakland plays host to the Detroit Lions in both teams' second exhibition game Friday night.