The postponement of two NASCAR races because of the threat of Tropical Storm Hanna has affected the TV schedule.

The Sprint Cup Chevy Rock & Roll 400, originally scheduled to be on ABC at 7:30 p.m. Saturday, will be shown at 1 p.m. Sunday on ESPN.

ESPN2 will televise the Nationwide Series Emerson Radio 250 at 7 p.m. Sunday. That race was supposed to be run Friday night.