Here are the final broadcast ratings for September 23, 2017.
Finals Update: ABC's game (1.4) adjusted up.
| 
Time | 
Show | 
Adults 18-49 Rating | 
Total Viewers  (In Millions) | 
| 
8:00pm | 
College Football - Penn State v Iowa (7:36pm) (ABC) | 
 1.4 | 
5.26 | 
| 
College Football - Notre Dame v Mich. St.(8:17pm) (FOX) | 
 1.0 | 
3.46 | |
| 
Dateline NBC (NBC) | 
 0.5 | 
3.32 | |
| 
NCIS: New Orleans (R) (CBS) | 
 0.4 | 
2.71 | |
| 
9:00pm | 
Criminal Minds (R) (CBS) | 
 0.4 | 
2.41 | 
| 
10:00pm | 
48 Hours (R) (CBS) | 
0.5 | 
3.70 | 
| 
Saturday Night Live (R) (NBC) | 
0.4 | 
2.22 | 
(R) = repeat
ABC's Penn State v Iowa game (1.3) beat out Fox's game (1.0) and easily topped the night.
NBC had an original Dateline (0.5) leading into an SNL repeat (0.4).
CBS had drama repeats (0.4/0.4) followed by one hour of 48 Hours (0.5).

