According to Ian Rapoport of the NFL Network, the NFL has suspended Texans defensive lineman Antonio Smith for the final 2 preseason games and the first week of the regular season for swinging a helmet at Dolphins offensive lineman Richie Incognito during last week’s game.
#Texans DT Antonio Smith's suspension is in: As expected, he'll be suspended for Week 1. Also is suspended the final two preseason games
— Ian Rapoport (@RapSheet) August 20, 2013
I think two regular season games would have been more reasonable, but the NFL has ruled.