http://butlerspeedway.net/news.asp?n=334

From Butler website:

Butler Cancels due to weather
Posted: Saturday, May 12, 2018

Racing for Saturday May 12 has been cancelled due to weather.

The Sprints on Dirt will be rescheduled for Saturday May 19.

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With the reschedule, this puts SOD back-to-back at Hartford and Butler next weekend.