Manchester, England, June 19: Competitors jostle for a position on the track during the 'Midsummer Night's Scream' Roller Derby roller skating event. Roller derby is a fast-paced, full-contact sport played on quad roller skates. The sport involves two teams, consisting of four blockers and one jammer. A game is known as a bout, and is broken up into two-minute sections called jams. The Montague team wearing white beat the Capulet team by 149 points to 92. (AP Photo/Jon Super)