Interference takes place when a player obstructs, blocks, screens or charges towards an opponent, with or without direct contact, in such a manner that prevents the opponent's approach to the ball carrier, potential ball carrier or the ball. Blocking is identified as the act of creating interference with contact.
On any play from scrimmage, a Team B player may use hands and arms to reach the ball carrier, but shall not hold or encircle any Team A player, other than the ball carrier.
It shall be illegal for a player of either team to block an opponent below the waist except when the block occurs in an area between the tight ends or tight end position, within 2 yards of the defensive side of the line of scrimmage extending back to the initial position of the quarterback or kicker. A player initiating a block below the waist in this area must be positioned in this zone at the snap of the ball for the block to be legal.
NOTE: If such an illegal low block also meets the criteria for an Unnecessary Roughness penalty such as but not limited to Clipping, Blocking Below the Waist, Crackback Blocking, Chop Blocking, Cut Blocking or Peel Back Blocking the player shall be penalized only for the Unnecessary Roughness penalty.
No player of either team may thrust his hands forward above the frame to contact the opponent on the neck, face, head or facemask. This does not apply to a ball carrier using a "stiff arm" or "straight arm" tactic where there is no grasping of the face mask.
You are reading the 2021 version of the rulebook. Other available versions of this page are:
Converted to the web by CFLdb. An Adobe Acrobat PDF of the current version is available.
The original source of the version presently being viewed is © Copyright 2021 Canadian Football League
Content compiled and written by Jeff Harbin et (sic) Andre Proulx
The CFL Official Rule Book is published annually by the Canadian Football League. Any inquiries regarding the CFL Official Playing Rules may be directed to Darren Hackwood, Associate Vice-President of Officiating at email@example.com. Any inquiries regarding CFL Statistical Scoring Rules may be directed to Jeff Krever, Head, CFL Player and Game Statistics at firstname.lastname@example.org.