Watch: Tom Brady gets chippy early in Ravens-Patriots
After a play in the second quarter, Brady was standing up with the football when Ravens linebacker Pernell McPhee appeared to knee him in the arm.
Brady, who was fired up already after scoring on a 4-yard run in the first quarter, was quick to respond to McPhee and a referee.
No flags were thrown on the play.
The Ravens lead the Patriots 21-14 at halftime.
- Mike Fiammetta