It's Derby Daze weekend! And this one's a double-header: First off, Atomic City (from Tri Cities, WA) take on Lava City (from Bend), then the Axles of Annihilation--Rose City's junior all-star team--take on Bakersfield, CA's Derby Revolution. Doors open one hour before the first bout. From the Rose City Rollers press release: "Please note, sitting alongside the track puts you within feet of the action and places you at higher risk of involvement in a skater collision. Arrive early enough to make seating arrangements you are comfortable with." Free parking.