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Chargers offensive tackle King Dunlap says Seahawks rookie defensive lineman Frank Clark of Michigan attacked San Diego quarterback Philip Rivers while Rivers was being sacked during a preseason game Saturday.

From a video of the incident, it is unclear what Clark might have done to upset the Chargers. (Go HERE if you can't see the video.)

It is clear that Rivers is holding onto Clark's jersey and actually keeping him on the pile as Clark is attempting to remove himself from the scrum.

Dunlap was given a 15-yard unnecessary roughness penalty for yanking Clark from the pile.

"That guy was on top of Philip, and that's our quarterback," Dunlap told the San Diego Union-Tribune. "I protect the quarterback at all costs."

Added Chargers guard D.J. Fluker: "That's our quarterback. "We're going to protect the jewel of our offense."

Clark was asked about the play but was not specific in his response.

"Man, this game, it's a lot of emotions is involved," Clark told the Seattle Times. "I'm a real emotional player but there are ways you react and ways you don't react. You've got to be smart in this game. That was something Sherm (Richard Sherman) was telling me afterwards. That whole thing, even though I didn't get called for anything, just to avoid situations like that."

Clark, who was drafted in the second round by the Seahawks, was kicked off Michigan's team last year following a domestic violence incident in Ohio. Earlier in his Michigan career he pleaded guilty to felony second-degree home invasion when he entered a dorm room at UM and took a computer. He was given probation for that and was permitted to remain on Michigan's team.

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