NASCAR returned to the track Sunday afternoon to colossal television ratings. The Real Heroes 400 from Darlington raced to the circuit's largest non-Daytona audience in over three years. The Xfinity series was supposed to return Tuesday night, also at Darlington Raceway in South Carolina, but it was postponed due to rain. The 147-lap race will now happen Thursday at 11 AM Central Time. NASCAR is running a condensed schedule with seven races across three tours. A NASCAR Series race is scheduled for tonight, and the marathon Coca-Cola 600 at Charlotte Motor Speedway is Sunday evening.