Thunder Bay’s Babes of Thunder take on Bemidji’s Whistle Punks on Saturday, May 11. This is the first of five bouts that the Thunder Bay Roller Derby League has planned for the summer. The season opener takes place at Delaney Arena, doors open at 7 pm and the game starts at 7:30 pm. Advance tickets are $10 and available at www.ticketscene.ca, or pay $12 at the door for adults, and $5 for children ages 6-12 (little ones are free).