Women’s roller derby keeps gaining popularity in the United States, and now, it’s spreading south of the border, to Tijuana. Erin Siegal reports from Baja California on the sport’s fierce feminine machismo.

Image courtesy of Erin Siegal.

Erin Siegal is a photographer, writer, and a TV and web producer, and radio reporter. Her work has appeared in the New Yorker, the New York Times, Time magazine, Rolling Stone, O Magazine, Newsweek, and many other magazines and newspapers. She’s currently a Senior Fellow at the Schuster Institute for Investigative Journalism, and a 2012 Soros Media Justice Fellow.