DUBUQUE, Iowa — Continued rain leading to over-saturated grounds, as well as a forecast for additional rain, has led to the cancellation of Sunday’s World of Outlaws NOS Energy Drink Sprint Car Series event at Dubuque Speedway.

The event will not be rescheduled.

Those who bought tickets in advance will receive a full refund at the point of purchase, while those who purchased tickets at O’Reilly Auto Parts can mail their tickets to SLS Promotions at 2134 East Waverly Lane, Arlington Heights, Ill., 6004.

The next scheduled World of Outlaws sprint car event is set for Thursday, June 27 at Minnesota’s Jackson Motorplex.

Brad Sweet is the current World of Outlaws point leader on the strength of five victories this season, including Saturday night at Beaver Dam Raceway in Wisconsin.