ALAMEDA -- Greg Knapp didn't bother to wait for the first question about the Raiders' so-far dormant running game.
"I know what's on your mind," the offensive coordinator said during his weekly meeting with the media Thursday. "Let's keep things in perspective here. We've played two games in the regular season on offense. We've had two different centers and a right tackle who played half a game last week.
"We need some patience.''
Knapp, who brought in a zone running scheme with a West Coast style offense, cited a lack of continuity on the offensive line, the small sample size from which to judge and the depth and talent of the opposition as circumstances to be considered when assessing the NFL's 31st-ranked rushing offense.
With Pittsburgh having one of the toughest run defenses in the NFL over the past decade, things won't get any easier Sunday, and Knapp is not promising a quick fix.
"It will take a little while,"' Knapp said. "I don't know what the set time is. It may not look like it statistically, but in the execution on cut blocks, combination blocks, we're seeing progress being made."
During a radio interview on Sirius XM NFL radio, former Raiders line coach Bob Wylie, addressing the difficulties of running back Darren McFadden (26 carries, 54 yards), said, "He is so fast he outruns the zone block," and also said, "You have to fit what he does, not what you want to do as a coach."
Said Knapp: "I can only speak
"I'm just looking to do whatever I've got to do to get back as soon as possible," Spencer said.
Middle linebacker Rolando McClain and defensive back Coye Francies, who had concussions, had limited participation and are still in the process of getting cleared medically.