Portis leaves game

Washington Redskins running back Clinton Portis got a blow on the head by Atlanta Falcons safety Thomas DeCoud,then was benched.
Portis hit with Decoud helmet-to-helmet.But portis seemed more terrible than his opponent and the staff said he got a head injury .
No penalty was claimed on the hit.Porits walked out the field with a towel on his head.Quarterback Jason Campbell also quit the game for an ankle injury temporarily then came up in the next possession.Redskins offensive tackle Mike Williams left with an ankle injury on the same play
Todd Collins took Campbell's position after each of his injury.Porits' redskins jersey seemed a little pale.