Coach Dennis Allen acknowledged Saturday the Raiders had better get used to the way games will be officiated this season but saw enough good things in a 10-6 road loss a day earlier to the Minnesota Vikings to be encouraged.
"The penalties were the biggest thing we had to deal with, and a couple of those things at this year's points of emphasis with defensive holding or illegal contact downfield," Allen said in a conference call with local reporters.
A facemask penalty on Brian Leonhardt also fell into that category, Allen said.
"I don't know that in the past you would see some of these things called, but with the rules and points of emphasis, we're going to see those things,'' Allen said. "It was good for us to get out, play a game and see how officials are going to call those things.''
The Raiders finished with 13 penalties for 94 yards, including five pre-snap penalties. The offenders were Menelik Watson (false start), Pat Sims (neutral zone infraction), Tony Bergstrom (two false starts) and Erle Ladson (false start).
Allen said positives from the loss included the running game and the pass rush.
Darren McFadden ran 23 yards on his only carry, Maurice Jones-Drew had two carries for 10 yards (not including a 7-yard run called back by penalty) and Latavius Murray had seven carries for 28 yards.
"I think we're going to have an effective run game,'' Allen said. "You saw some good things up front with guys being able to move people off the ball.''
Defensively, the Raiders sacked starting quarterback Matt Cassel once, backup Teddy Bridgewater twice and third-string quarterback Christian Ponder three times.
Allen said he was "not displeased'' with the performance of starting quarterback Matt Schaub, noting three potential first down passes that were dropped. Schaub was 3 of 7 for 21 yards.
"We obviously need to play better and be more consistent, but there were things to build on,'' Allen said.
Allen said getting rookie quarterback Derek Carr work with the first team was "not part of the plan right now.''
Rookie starting strong side linebacker Khalil Mack, Allen said, was able to cause "disruption'' on a couple of pass rushes but overall "I think you saw a guy playing in his first NFL game.''
Rookies who impressed Allen included defensive end Shelby Harris and cornerback T.J. Carrie. Both are seventh-round picks who look as if they will not only make the 53-man roster but potentially be a part of the regular rotation.
For more on the Raiders, visit the Inside the Oakland Raiders blog at ibabuzz.com/oaklandraiders.
Detroit (1-0) at Raiders (0-1), 7 p.m. KTVU