![Metz Roller Girls (red) playing a match against Strasbourg Roller Derby Girls (blue) during a national tournament in Nantes, western France on March 17, 2012. Roller Derby is an American-invented contact sport. Metz Roller Girls (red) playing a match against Strasbourg Roller Derby Girls (blue) during a national tournament in Nantes, western France on March 17, 2012. Roller Derby is an American-invented contact sport.](https://c8.alamy.com/comp/2E0BB5E/metz-roller-girls-red-playing-a-match-against-strasbourg-roller-derby-girls-blue-during-a-national-tournament-in-nantes-western-france-on-march-17-2012-roller-derby-is-an-american-invented-contact-sport-the-game-involves-two-teams-of-players-who-are-racing-around-an-oval-racetrack-in-each-team-there-is-a-scoring-player-designated-as-the-jammer-among-the-other-members-called-blockers-the-real-race-is-occuring-between-the-two-jammers-while-the-blockers-are-trying-to-bring-them-down-photo-by-laetitia-notarianniabacapresscom-2E0BB5E.jpg)
Metz Roller Girls (red) playing a match against Strasbourg Roller Derby Girls (blue) during a national tournament in Nantes, western France on March 17, 2012. Roller Derby is an American-invented contact sport.
![Real hits, strategy and athletes: It's time to watch modern roller derby live | Entertainment | swnewsmedia.com Real hits, strategy and athletes: It's time to watch modern roller derby live | Entertainment | swnewsmedia.com](https://bloximages.newyork1.vip.townnews.com/swnewsmedia.com/content/tncms/assets/v3/editorial/1/06/10633bc8-122c-5c8b-ac90-0876962f2165/5a904f2721623.image.jpg?resize=750%2C500)
Real hits, strategy and athletes: It's time to watch modern roller derby live | Entertainment | swnewsmedia.com
![Metz Roller Girls (red) playing a match against Strasbourg Roller Derby Girls (blue) during a national tournament in Nantes, western France on March 17, 2012. Roller Derby is an American-invented contact sport. Metz Roller Girls (red) playing a match against Strasbourg Roller Derby Girls (blue) during a national tournament in Nantes, western France on March 17, 2012. Roller Derby is an American-invented contact sport.](https://c8.alamy.com/comp/2E0BB4W/metz-roller-girls-red-playing-a-match-against-strasbourg-roller-derby-girls-blue-during-a-national-tournament-in-nantes-western-france-on-march-17-2012-roller-derby-is-an-american-invented-contact-sport-the-game-involves-two-teams-of-players-who-are-racing-around-an-oval-racetrack-in-each-team-there-is-a-scoring-player-designated-as-the-jammer-among-the-other-members-called-blockers-the-real-race-is-occuring-between-the-two-jammers-while-the-blockers-are-trying-to-bring-them-down-photo-by-laetitia-notarianniabacapresscom-2E0BB4W.jpg)