NASCAR Bristol TV rating (Update)

UPDATE NASCAR's rain-delayed Sprint Cup race from Bristol averaged 2.6 million 'final' viewers on Fox Sports 1 Sunday.

04/20/15 TV Ratings for the rain-delayed NASCAR Sprint Cup Food City 500 from Bristol Sunday:
2.89 rating FOX 2:30 pm Bristol TN 500 RAIN DELAY Coverage
1.39 rating FS1 6:30 pm Bristol TN 500 Race Coverage

NASCAR Xfinity Series Saturday
0.70 rating FS1 1:30 pm Bristol TN 300

Conclusion: NASCAR fans lead a very boring life that so many (well over 3 million people) would stay tuned in to FOX on Sunday afternoon for hours to watch trucks circle the track trying to dry it.