''We need better production out of the quarterback position, period, not just Aaron. Aaron would probably be the first person to tell you he's not satisfied.''
Brooks struggled with Oakland's starting offense for the second straight week. He was 1-for-6 in pass attempts and has completed only 2 of 9 throws for 28 yards this preseason.
Brooks' completion percentage (22.2) is the lowest among the Raiders' three quarterbacks, while his quarterback rating is a mere 37.5
Brooks isn't the only Oakland quarterback struggling. Backups Andrew Walter and Marques Tuiasosopo have been only mediocre in the two games, though Walter did generate a spark for the offense when he connected with wide receiver Johnnie Morant on a 67-yard touchdown in the win over the Vikings.
But Walter also threw two interceptions and has yet to develop a consistent, steady approach. That's why Shell hedged when asked whether or not the second-year quarterback -- who taken reps with the first-team offense in training camp -- might get some time with the starters in one of the team's three remaining preseason games.
''That's always a possibility,'' Shell said before quickly adding, ''I haven't even had a thought about that at this time.''
Of more concern to Shell is the play of the offensive line, which continued to have its problems both in the running game and with pass protection. The Raiders are averaging just 2.8 yards per carry on the ground while Oakland quarterbacks have been sacked 10 times in two games.
Shell also said he has no plans to talk to wide receiver Randy Moss about Moss' post-game comments following the win over Minnesota. Moss, who was traded to Oakland from the Vikings prior to the 2005 season, was angry over being taken out of the game in the middle of a drive in the first half and television cameras caught his frustration on the sidelines.
''There's no need to talk to him, I made the decision to take him out,'' Shell said. ''It was time to get him out of there. There's no need to talk to him about that.''
* Linebacker Timi Wusu strained his groin and will be sidelined 1-2 weeks.
* Tackle Williams Obeng sprained his right foot and could be out up to two weeks.
* Running back Rod Smart suffered a sprained MCL in his knee but the injury isn't deemed serious. He is listed as day-to-day.