Strap on your skate face, it's roller derby mania with three Rose City Rollers bouts and a scrimmage at the Hangar at Oaks Park (7805 SE Oaks Park Way) this weekend. Here's a breakdown:

It's those icy vixens the Heartless Heathers vs. the Thrill Kill Kittens out of Salem. Friday, Jan. 28 at 8 pm, $7 (at the door, no advance tickets on sale)

There's a skaters-only scrimmage going down Saturday afternoon, gearing up for the first game of the 2011 season with the Break Neck Betties vs. the Guns N Rollers, who seem to be the underdogs this season. Saturday, Jan. 29, 6 pm, $14. Get your tickets through the Merc's ticketing service.

Finish the weekend on an adorable (yet ferocious) note with the ankle-biters of Portland's Rosebuds junior league as they take on the Kitsap Derby Brats from Port Orchard, Washington, in an informal scramble. Sunday, Jan. 30, 3 pm, $5 (at the door, no advance tickets on sale)

Hey, who's up for some skating at the roller rink after Saturday's game?