The Raiders’ offense was a mess in Friday night’s preseason opener at Minnesota, and quarterback Matt Schaub knows he’s going to get a large share of the blame.

Schaub played three series with Oakland’s first-string offense, and all three ended in punts, without a single first down.

“We went out and we didn’t play near to expectations or our standard and we need to go back and figure out how to play that way next week,” Schaub said after the game.

Schaub’s backup, second-round rookie Derek Carr, wasn’t much better. Carr threw an interception on his first series, and all the rest of his series ended in punts as well.