The O’Reilly MLRA Jack Vaughn Memorial Race scheduled for May 3 at Adrian (Mo.) Speedway has been rescheduled for May 17 so that the Vaughn family is able to attend... The O’Reilly Midwest All Star Series events scheduled for May 9-10 have been postponed with rescheduled dates still in negotiations. Memorial Day weekend marks the next event for the series. More information is available at www.midwestallstarseries.com... Kyle Busch has entered the Echo Chainsaw 100 ASA Midwest Tour event scheduled for May 4 at Madison Int’l Speedway... World famous boxer Floyd Mayweather, Jr. will serve as honorary starter for the 92nd running of the Indianapolis 500 May 25... Dollar General has signed a multi-year agreement to be the title sponsor for the NASCAR Nationwide Series race at Chicagoland Speedway. The new Dollar General 300 Powered by Coca-Cola on July 11 also marks the first Nationwide Series night race at the speedway... Lucas Oil Late Model Dirt Series races set  for  Bedford (Pa.) Speedway and Hagerstown (Md.) Speedway this past weekend were rescheduled due to rain. The Hagerstown race has been postponed until Aug. 2, and the Bedford event is rescheduled for  July 31... In honor of his accomplishments and long affiliation with Ford Racing, Ford Racing Mustang Challenge organizers have invited former Trans Am champion Dorsey Schroeder to be Grand Marshal for the debut race of the Ford Racing Mustang Challenge for the Miller Cup at Road Atlanta on May 3.