no, in fact very real
Roller derby is a real and unscripted sport where players compete in physical contact on a track. While some aspects of the sport may be choreographed for entertainment purposes, the competition and outcomes are not predetermined.
Stockholm Roller Derby was created in 2007.
Roller Derby Brasil was created in 2011.
Roller Derby France was created in 2011.
Maine Roller Derby was created in 2006.
Montreal Roller Derby was created in 2006.
Copenhagen Roller Derby was created in 2009.
Helsinki Roller Derby was created in 2009.
Houston Roller Derby was created in 2005.
Pacific Roller Derby was created in 2008.
Toronto Roller Derby was created in 2006.
Humboldt Roller Derby was created in 2007.