The Mad Rollin’ Dolls, Madison’s premiere derby league, first laced up its skates for the public in late 2004 and haven’t looked back. This league is a grass roots effort run by an all-volunteer group of skaters and non-skaters. The season opener in the Coliseum is sure to be a great bout for all roller derby fans, so come and join the fun! Doors open at 5pm, bouts start at 6pm. Tickets are $10 in advance or $12 at the door. Kids 4-10 are half-price, under 4 are free. Visit www. alliantenergycenter.com for more information.