PITTSBURGH -- Raiders defensive tackle Richard Seymour was ejected late in the first half for flattening Pittsburgh Steelers quarterback Ben Roethlisberger with a right hand to the face.
Roethlisberger had just completed a 22-yard touchdown pass to rookie wide receiver Emmanuel Sanders to give the Steelers a 21-3 lead. Roethlisberger raised his arms to signal touchdown and walked toward the original line of scrimmage, when Seymour turned suddenly and shoved him in the face.
"I was not expecting that from him "... " Roethlisberger said. "It blew my mind. We knew coming in that it was going to be a pretty physical game. There was a lot of pushing and shoving and extracurricular stuff."
"I haven't seen a quarterback get punched since I've been in a league, after a play like that," Steelers coach Mike Tomlin said. "It was unfortunate. "... (The game) got away from us all (Sunday). I'm not going to let that play cloud my opinion of Richard Seymour."
As Roethlisberger fell to the ground, a massive altercation broke out. Seymour said there was a lot of talking going on, but he didn't recall the exact nature of what was being said.
"It was a lot of ongoing (stuff), and you're out there to protect yourself," Seymour said. "It's still no excuse. I'm not sure exactly what happened on the play. I just turned around, and he just ran up on me quick. It was just natural reaction."
Earlier in the second quarter, Seymour also was involved in a dust-up, this time with a Steelers offensive lineman. No penalties were assessed.
There were offsetting penalties after the incident with Roethlisberger because Steelers guard Chris Kemoeatu was called for a penalty, as well.
"I overreacted," said Kemoeatu. "Me and (Seymour) were exchanging words and punches the whole game, but if he had something personal with me, he should have taken it out me, and not on Ben."
Last week, fellow defensive tackle Tommy Kelly and defensive coordinator John Marshall detailed how Seymour's typically calm demeanor changes during games.
"Richard is a soft-spoken, quiet kind of guy," Marshall said. "But, as you study film of Richard, (he) is not a very nice man on the football field. All I can say is Richard takes care of business."
Kelly called Seymour a "bully" and someone who is "different on game day."
Seymour can expect a fine from the league office at some point this week. It's also conceivable that he will be suspended for at least one game.
Scott got hurt running downfield as part of Oakland's punt coverage unit. Team trainers tended to Scott as he lay on the turf. He eventually was carted off.
Raiders coach Tom Cable said "it's going to take some time" for Scott to recover if the initial diagnosis holds up. Scott has started all 10 games this season, including seven at end. He will be replaced by Matt Shaughnessy.
They entered the game No. 1 against the run at an average of 63.2 yards per game and 2.8 yards per carry allowed. The Raiders totaled 61 yards and averaged 3.8.
Baltimore Ravens running back Ray Rice is the only player to top 100 yards in a game against the Steelers in their past 44 games.
The Raiders featured the NFL's second-ranked rushing attack through nine games at an average of 162.2 yards per game, but they failed to find many holes against the Steelers' aggressive defensive scheme.
Thirty-six of the 61 yards came on a 24-yard run by Michael Bush and a 12-yard scamper by quarterback Bruce Gradkowski. The 14 other carries netted an average of 1.8 yards.
Raiders running back Darren McFadden, who was averaging 108.1 yards rushing in the seven games he played before Sunday, was limited to 14 yards on 10 carries.
That was referee Tony Corrente to Raiders rookie defensive end Lamarr Houston on a scuffle early in the second quarter. Corrente's microphone was on during the exchange.
A Steelers interception return for touchdown in the third quarter also was called back because Steelers linebacker James Harrison hit Raiders quarterback Jason Campbell with "the full weight of his body," according to Corrente, resulting in a personal foul penalty.
Veteran defensive tackle John Henderson played for the first time since he suffered a stress fracture in his right foot on Sept. 19. He missed seven games.