Roller derby is a fast-paced, full-contact sport played on quad roller skates. 

Short Track Roller Derby

• Two teams of up to 7 skaters each.
• Two periods of 10 jams each. Each jam is 60s long; with a 30s interval between.
• The first period is skated clockwise; the second period is skated counter-clockwise.
• Each skater is numbered via arm bands in a “Jammer Order”. Each skater jams in turn, at least once per period. After jam #7 is complete, teams may field any skater as jammer for the remaining jams in that period.
• The jams can be called off for injury/emergency.
• Each pass of the pack (all blockers on the track including own team) counts for one point (scoring starts at the initial pass).
• Fouls may be remedied by Yielding. Fouls not yielded, or procedural or egregious fouls, will result in a loss of 2 points for the penalized team.
• Jammers must yield a foul by returning ‘to the scene of the crime’ regardless of the location of the skater they have fouled.
• Skaters who are knocked out of bounds must return to the track at the location where they exited, regardless of the location of any other skater on the track.
• Recommended officiating crew includes at least one Referee (two recommended), one timekeeper, and one scorekeeper.