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The game of roller derby is governed by a team of up to seven skating referees.
( Only three are required due to the grass-roots nature of the sport, though the full seven are used whenever possible ).
The required referees are a head referee, who oversees the running of the entire game and has final say in any disputes, and who doubles as an inside pack referee, following along side the main pack of skaters from inside the track and issuing and enforcing penalties for fouls or infringements of the rules ; and two jammer referees who follow the two point-scoring players known as jammers.
Additional referees fill the roles of a second inside pack ref and up to three outside pack refs, who perform similar duties to the inside pack refs, but from the outside of the track, and who rotate active duty in a relay-race style to avoid fatigue caused by the extra speed needed to keep pace with the pack from the outside.
Non-skating officials complete the team by recording and communicating points and penalties and ensuring skaters serve their time accordingly.
Only the team captains may engage in discussions with the referees over calls made.
Referees are also responsible for ensuring the skaters are correctly wearing all regulation safety equipment.

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