With heavily saturated grounds following extensive rain received earlier in the week, World of Outlaws Case Late Model Series officials have postponed Friday's $12,000-to-win stop at River Cities Speedway to June 30.

Track and series officials moved the Heartland Grand Tour finale to Sunday's rain date, with the hopes an additional 48 hours will allow the Grand Forks, N.D., 3/10-mile facility sufficient time to dry.