They better be.
With Stephen Jackson and St. Louis coming to town for Oakland's home opener, the Raiders won't get much of a break as they try to avoid an 0-2 start for the fourth time in six seasons.
"We just had a couple breakdowns here and there," Wimbley said Wednesday. "I don't think it was anything with the scheme or the play-calling. We just had a couple mental breakdowns that gave them some big plays that allowed them to get that high on us."
That helped turn what had been a promising start to the season for Oakland's run defense into a nightmarish afternoon that ended with a 35-13 loss to Tennessee. It was the eighth straight season-opening defeat for Al Davis' team.
"We played well on Johnson for most of the game, and he had that one big run that helped his average out," Wimbley said. "Facing Jackson, he's not necessarily as fast as Johnson is, but he still has a lot of stuff that you have to be aware of and be careful about."
Oakland also signed free-agent defensive tackle John Henderson and used their first two picks in the draft on middle linebacker Rolando McClain and defensive end Lamarr Houston.
It all looked good on paper until Johnson's big run, which brought to mind memories of 2009, when the Raiders ranked 29th against the run and 26th on defense overall. Safety Tyvon Branch whiffed on a tackle attempt near the line of scrimmage and McClain and linebacker Thomas Howard were sealed off perfectly, opening a huge lane for Johnson to burst through.
Oakland's players and coaching staff said the mistakes were self-inflicted.
"We needed to finish a little better," Wimbley said. "Once the score kind of got out of whack, I think we stepped it up a little bit, trying to bring it back close before the game was over, but by then it was already too late."
Before Johnson's long touchdown, which boosted his per-carry average from 2.54 to 5.3, the Raiders defense had shut down the last year's NFL-leading rusher.
"See, this is the mode we have got to get out of around here," Cable said. "That's not good enough. We have got to stay to this level, to this vision that we have. A standard of play, if you will, and don't compromise it."
Notes:T Erik Pears, who was with the team in training camp, has been re-signed. To make room on the roster, WR/KR Yamon Figurs was released. Figurs started on special teams against the Titans and fumbled the opening kickoff, but Cable insisted that wasn't why the move was made. ... LG Robert Gallery did not practice because of a hamstring strain. His status is questionable. ... CB Nnamdi Asomugha (groin), WR Chaz Schilens (knee), DT Richard Seymour (hamstring), S Hiram Eugene (hamstring), CBs Chris Johnson (stinger) and Walter McFadden (hamstring) and LB Travis Goethel (back) were also held out of practice.
Copyright 2010 by The Associated Press