If you've never been to Roller Derby, this might be a great time for you. Saturday, the Billings Derby Dames are putting on a bout at Shrine Auditorium to benefit United Blood Services. Its "My Blood Valentine" at the Shrine.

Here's a description of what you might see.

Tickets and more information at Billings Derby Dames. Tickets are available for $6 in advance through the link.

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