New Zealand captain Richie McCaw has criticised the inconsistency of rugby's judicial system after England hooker Dylan Hartley escaped disciplinary action.
Hartley crashed into McCaw with a forearm challenge in the second half of the All Blacks' 26-16 win at Twickenham, but citing commissioner John West decided to take no action.
New Zealand hooker Keven Mealamu, however, was hit with a four-week ban after being cited for headbutting Lewis Moody and McCaw was annoyed not to see Hartley in the dock.
"It's a little surprising. That's the biggest frustration as a player -- the inconsistency," said McCaw. "With that incident, I'm surprised he wasn't up."