Originally Posted by infantrycak
They have done it before. Happened a couple times last year where players were fined for non-flagged plays.
Here are a couple examples:
Here is an article on it - Link
All of those fines discussed in those two articles are based on "hits" in illegal areas (defenseless receivers, helmet to helmet, unnecessary roughness). These aren't your typical penalties with lineman vs lineman stuff, that's more in the realm of holding, hands to the face and the like. I don't see the NFL doing much more to Incognito than sending him a formal letter saying the refs will key on his play more throughout the season.