Competing in the Women's Flat Track Derby Association, the Philly Roller Girls jammed their way around the track before an enthusiastic multi-generational crowd at the 23rd Street Armory Saturday Night.

Philly's Independence Dolls took on and over the Wilmington, North Carolina Cape Fear Roller Girls. In the second match, two Philly teams faced off: The Heavy Metal Hookers and the Broad Street Butchers, attired, respectively,with tiger striped shorts and blood-red stained butcher aprons.

Vanessa Jackson, a bartender, aka "Euro Thrasher" of the Hookers doubles as co-head of public relations. Five years ago, a girl working at the bar behind hers invited Jackson to a game; it "blew her mind" – she knew she had to do derby and now "Thrasher" cannot imagine life without it.

"Mercedes Bends" of West Philly and Germany, a student teacher of the German language,  was selling roller derby paraphanalia at the event because her teams, the Britches and nationally 4th ranked travel team Bells weren't on the bill. "Bends" progressed into the sport through a combination roller skate dancing, soccer and karate!  Skater "Gingervitis" introduced her to roller derby and in 2009 she earned best team Jammer and MVP awards.  Her profile quote is "German engineering meets American crash standards."

Watch video here.