The challenge must be initiated by the Head Coach by throwing their challenge flag prior to the next legal snap or within 30 seconds of the start of a TV commercial break.
It is the responsibility of the coach to get the attention of the nearest official and to throw the challenge flag.
A challenge is deemed successful (or won) if the final ruling on the play is the outcome the team requested during their challenge.
A team will get their challenge back if a review changes a different ruling on the play which makes the team challenge not relevant.
There are two categories of coach initiated reviews:
A coach may challenge the following called or non-called fouls:
A coach may challenge the following called foul:
These penalties will only be reviewed when a coach challenges one of them and only the penalty the coach challenges will be reviewed.
An exception occurs when a coach challenges Defensive Pass Interference, Offensive Pass Interference or Illegal Interference - Blocking Downfield by an eligible pass receiver. When this happens the Command Centre will look at the players and actions identified by the coach to determine which of the three fouls, if any, is the correct ruling.
A coach can challenge any ruling that does not directly involve a called or non-called foul. The reviewable situations include but are not limited to:
In addition, a coach can challenge a ruling which can then lead to the following called or non-called fouls being changed:
Penalties which are created as a direct result of the change in a ruling may be applied even though a foul was not called during the play. Fouls that were called during the play may be nullified as a direct result of a change to the ruling.
When a play is challenged for either a coach challengeable penalty or a standard reviewable aspect all other appropriate Standard Reviewable Rulings will also be reviewed.
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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 firstname.lastname@example.org. Any inquiries regarding CFL Statistical Scoring Rules may be directed to Jeff Krever, Head, CFL Player and Game Statistics at email@example.com.