Ngata put his right foot into the side of Redskins left guard Shawn Lauvao for what he described as retaliation for a late hit.
After a long run by Redskins running back Alfred Morris, Lauvao flew in to lay out Ravens cornerback Dominique Franks. With Lauvao laying face first in the ground, Ngata took a couple of steps toward the lineman and kicked him.
Ngata wasn't penalized on the play, and Lauvao wasn't injured.
It is believed that this is the third time Ngata has been fined in the past four years.