The Rules of Flat Track Roller Derby

5.1 - Blocking to the Back

Hitting an opponent in the back of the torso, back of the legs, or back of the buttocks is prohibited (see Section 4.2.2). Hitting an opponent with a legal blocking zone into a legal target zone while positioned behind said opponent is not blocking to the back and is not necessarily illegal.

5.1.1 - Any contact to the back of an opponent that forces the receiving opponent off balance, forward, and/or sideways, but does not cause any opponent to lose relative position or any teammate (or the initiator) to gain relative position.

5.1.2 - Any contact to the back of an opponent that forces the receiving opponent out of their established position. This includes forcing an opponent down, out of bounds, or out of relative position.

5.1.3 - Any contact to the back of an opponent that causes any opponent to lose relative position, or the initiator or any teammate to gain relative position.

The following egregious acts will be automatic game expulsions. Expulsions will be issued for a conscious and forceful attempt to block an opponent in the back egregiously, whether or not the action was successful.

5.1.4 - Negligent or reckless illegal contact to the back of an opponent, back of an opponent’s legs, or back of an opponent’s buttocks.