Monday, April 2, 2012 In order to form a pack, a team must have at least one Blocker on the track at all times.

his rule makes a lot of sense. Without a pack there is no engagement zone. Without an engagement zone nobody may engage. That means that if one team has 4 Blockers on the track, and the other team were to have none, the team with all Blockers would not be able to engage their opposing Jammer. It would ruin derby. Therefore, there must always be one Blocker on the track from each team at all times.