What constitutes 'blocking out-of-bounds' in roller derby?

Blocking out-of-bounds specifically refers to the act of removing an opponent from the track or forcing them outside the established boundaries of the playing area. This constitutes a foul within roller derby play because it goes against the rules designed to maintain safety and fair play. Players are expected to stay within the track boundaries, and pushing an opponent out is a violation aimed at ensuring that the game remains competitive and safe.

This action disrupts the flow of the game and can lead to injuries, which is why it is penalized. Acceptable physical engagement in roller derby is defined by the parameters of the track, and players are trained to use blocking techniques that do not involve pushing opponents out of bounds. The principle behind this rule is to keep the game fair and to contain the play within a defined area, promoting skillful play rather than reckless physicality that can lead to safety concerns.