what are all the races?
nextera energy resources 250, kroger 250, sfp 250, north carolina education lottery 200, lucas oil 200, winstar world casino 400k, gateway 200, unoh 225, american ethanol 200, mudsummer classic, pocono mountains 150, michigan national guard 200, unoh 200, chevy silverado 250, enjoyillinois.com 225, unoh 175, smith's 350, fred's 250, kroger 200, winstar world casino 350k, lucas oil 150, ford ecoboost 200
of these, which was postponed?
kroger 250