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Afternoon rainstorms forced the postponement of Monday's DIRTcar Summer Nationals event at Lake Cumberland Speedway in Burnside, Ky., the track announced. The race, also rained out July 13 in an attempt to host the tour for the first time, may be rescheduled, but no makeup date was immediately announced.

The tour takes a break before returning to action Aug. 13-14 with makeup events at Highland (Ill.) Speedway and Federated Auto Parts Raceway at I-55 in Pevely, Mo.

Bobby Pierce of Oakwood, Ill., an 11-race tour winner, leads the standings with 1,591 points over Tanner English (1,405) and Ashton Winger (1,348).