Who would’ve thunk it? Try reading this sentence without gasping: NBC had 9 of the top 10 shows last week. I’m not sure the last time that happened, but I’m guessing it involved Jerry Seinfeld and the cast of ‘ER.’

Buoyed by football, ‘The Voice,’ ‘America’s Got Talent’ and a fresh fall sked, the Peacock network managed to trump its rivals. CBS only had one entry in the Top 10 – and, again, who can remember the last time that happened?

NBC’s Ryan Murphy comedy ‘The New Normal’ did fine in its normal time slot, attracting nearly 7 million viewers, but the Matthew Perry comedy ‘Go On’ did even better, netting about 9.73 million sets of eyeballs.

FOX also did fairly well, with ‘The X-Factor’ attracting more than 8 million viewers for its two airings. Still, that was less than ‘The Voice.’ Also, ‘Glee’ premiered to 7.41 million viewers, good for 14th place for the week.

Here’s a look at the Top 20:

1. Sunday Night Football: Detroit at San Francisco, NBC, 21.33 million.

2. “Sunday Night NFL Pre-Kick,” NBC, 15.23 million.

3. “60 Minutes,” CBS, 12.36 million.

4. “The Voice” (Monday), NBC, 12.29 million.

5. “Football Night in America” Part 3, NBC, 11.74 million.

6. “The Voice” (Tuesday), NBC, 11.42 million.

7. “America’s Got Talent” (Wednesday), NBC, 11.05 million.

8. “The Voice” (Wednesday), NBC, 10.89 million.

9. “America’s Got Talent” (Thursday), NBC, 10.59 million.

10. “Go On,” NBC, 9.73 million.

11. “NCIS,” CBS, 8.77 million.

12. “The X Factor” (Wednesday), Fox, 8.73 million.

13. “The X Factor” (Thursday), Fox, 8.28 million.

14. “Glee,” Fox, 7.41 million.

15. “Big Brother” (Sunday), CBS, 7.24 million.

16. “Football Night in America” Part 2, NBC, 7.16 million.

17. “The New Normal,” NBC, 6.96 million.

18. “The Big Bang Theory,” CBS, 6.94 million.

19. “Hawaii Five-O,” CBS, 6.94

20. “The New Normal” (Special), NBC, 6.88 million.