Hard-hitting Houston Texans safety D.J. Swearinger didn't draw a fine for his concussion-causing hit on Denver Broncos wide receiver Wes Welker.

Swearinger was penalized last week, though.

It was Welker's third concussion in nine months.

Welker got hit in the head with a shoulder tackle.

Broncos quarterback Peyton Manning was fined $8,268 for confronting Swearinger.

"I believe that that particular hit was a bang-bang play where he was leading with his shoulder and at the last second Welk caught the pass and kind of ducked to make sure that he was protecting himself on the hit and it ended up being a shoulder into the head/neck area," Texans coach Bill O'Brien said. "It was a very bang-bang play. Like I said last week, D.J. was not trying to do harm to anybody. D.J., in our building, has a good reputation as a guy that works extremely hard."

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Aaron Wilson covers the Ravens for The Baltimore Sun