A blocking group (of 1-4 blockers) will set up in front of the jam line and engage the jammer for 30 feet (to the pivot line) and try to make it as hard as possible for that jammer. -Every other athlete at practice is a "jammer" and will face the blocking group. -The blocking group will work to hold one jammer for as long as possible between the jammer and the pivot line. -When any person touches the pivot line, the group will disengage and reset.

• After 30 seconds the next jammer will attack. -After every other athlete has jammed, rotate who is in the blocking group. -Continue until every athlete at practice has been part of a blocking group.

From Power Through the 4th Whistle - Roller Derby Thoughts #28 - Communicating Drills https://open.spotify.com/episode/5UR4fbYBkvFXph9PHlDuSj

Members of the blocking group will reset quickly and communicate efficiently. They will better understand how to work with each other and will be better able to hold opposing jammers as their drill time progresses.