Meriweather, the Redskins' starting safety caught, Lacy with a high hit that appeared to be helmet-to-helmet at the tail end of Lacy's first carry. Lacy was taken to the locker room and the Packers announced shortly thereafter that he would miss the remainder of the game due to a concussion.
No flag was thrown on the play, though there appeared to be significant cause for one -- both FOX announcer Troy Aikman and former NFL official Mike Pereira argued that Meriweather should have received a personal foul for leading with the crown of his helmet.
Here's a look at the hit:
Even if Lacy had returned to the game, Meriweather would have been in danger of receiving a fine. He was hit with a $50,000 fine in 2010 for a helmet-to-helmet hit (the punishment was reduced to $40K on appeal), then was hit with a $20,000 fine in '11 as well. Those past transgressions certainly would put Meriweather in the repeat offender category. Ndamukong Suh recently found out how expensive that tag can be -- he was fined $100K for his low block on Minnesota's John Sullivan last week.
Meriweather later suffered an injury of his own, on another violent collision with a Packers running back. This one occurred as Meriweather lowered his head and smacked helmets with James Starks.