Lucas Oil POWRi United Rebel Sprint Series drivers will head to Thomas County Speedway in Colby, Kan., on Saturday, June 27. Racing is scheduled to begin at 7 p.m. General admission is $15 with kids 12 and under free. Both events pay $700 to win and $200 to start, and were originally scheduled for late-May, but restrictions in effect forced the postponement to a later date. COLBY, Kan. – The Mel Hambelton Ford Racing POWRi United Rebel Sprint Series is slated to take on a doubleheader weekend June 27 and 28. On Sunday, June 28, competitors will head east on I-70 to WaKeeney Speedway complete the doubleheader weekend. With the Sprint Cars will be IMCA Kansas Thunder Racing Series Modifieds, Sports Mods, Stock Cars, and Hobby Stocks. Racing will begin at 6 p.m.. General admission is $15 with kids 12 and under free.