Darlington, FS1: Sat-NASCAR RaceDay 12:30p ET, Xfinity green 1:12p ET. 45-45-57 (147). Comp caution L20. 5 sets. Fuel 65-70. Sun-NASCAR RaceDay 2p ET, Cup green 3:42p ET. 90-95-108 (293). Comp caution L30. 11 sets. Fuel 68-73. NWS: Temps 70s Sat, 80s Sun, 0% rain.