Primetime Preliminary Fast National Nielsen Data
(includes all DVR playback through 3:00 am)

Here are the highlights of the 11 ad-sustained programs that aired in primetime on the broadcast networks last night (4/23/21):

NBC (3.476 million viewers, #1; adults 18-49: 0.5, #T1) was the top draw on a competitive Friday with its duo of "The Blacklist" (3.334 million viewers, #4; adults 18-49: 0.4, #T4) and "Dateline NBC" (3.547 million viewers, #3; adults 18-49: 0.5, #T2).

ABC (2.735 million viewers, #3; adults 18-49: 0.5, #T1) shared in the demo honors with "Shark Tank" (3.927 million viewers, #1; adults 18-49: 0.6, #1) and "20/20" (2.139 million viewers, #7; adults 18-49: 0.4, #T4) as did FOX (2.042 million viewers, #4; adults 18-49: 0.5, #T1) with "WWE SmackDown" (2.042 million viewers, #8; adults 18-49: 0.5, #T2).

Meanwhile, CBS (3.295 million viewers, #2; adults 18-49: 0.3, #4) opted for repeats of "MacGyver" (3.008 million viewers, #6; adults 18-49: 0.3, #T6), "Magnum P.I." (3.287 million viewers, #5; adults 18-49: 0.3, #T6) and "Blue Bloods" (3.591 million viewers, #2; adults 18-49: 0.3, #T6) as well as The CW (0.867 million viewers, #5; adults 18-49: 0.1, #5) with "Whose Line Is It Anyway?" (0.832 million viewers, #11; adults 18-49: 0.1, #T9), another "Whose Line Is It Anyway?" (0.876 million viewers, #10; adults 18-49: 0.1, #T9) and "Penn & Teller: Fool Us" (0.879 million viewers, #9; adults 18-49: 0.1, #T9).

Week-to-week changes (adults 18-49):
+33.33% - The Blacklist
+25.00% - Dateline NBC
0.00% - Shark Tank
0.00% - WWE SmackDown
-20.00% - 20/20

Year-to-year changes (adults 18-49):
0.00% - WWE SmackDown
-14.29% - Shark Tank (vs. 2020 NFL Draft - Rounds 2-3)
-16.67% - Dateline NBC
-33.33% - The Blacklist
-42.86% - 20/20 (vs. 2020 NFL Draft - Rounds 2-3)

Here are the highlights of the 10 ad-sustained programs that aired in primetime on the broadcast networks one year ago (4/24/20):

CBS (7.108 million viewers, #1; adults 18-49: 0.7, #T1) took home top honors on Friday with its mix of "MacGyver" (6.180 million viewers, #3; adults 18-49: 0.7, #T2), "Magnum P.I." (7.059 million viewers, #2; adults 18-49: 0.7, #T2) and "Blue Bloods" (8.086 million viewers, #1; adults 18-49: 0.8, #1).

Sharing the demo crown was ABC (3.121 million viewers, #3; adults 18-49: 0.7, #T1) with its coverage of the "2020 NFL Draft - Rounds 2-3" (3.121 million viewers, #6; adults 18-49: 0.7, #T2).

Next up was NBC (4.671 million viewers, #2; adults 18-49: 0.6, #3) with new episodes of "The Blacklist" (4.815 million viewers, #4; adults 18-49: 0.6, #T5) and "Dateline NBC" (4.600 million viewers, #5; adults 18-49: 0.6, #T5).

Meanwhile, FOX (2.014 million viewers, #4; adults 18-49: 0.5, #4) offered up its weekly "WWE SmackDown" (2.014 million viewers, #7; adults 18-49: 0.5, #7).

And finally, The CW (0.814 million viewers, #5; adults 18-49: 0.2, #5) opted for repeats of "Penn & Teller: Fool Us" (0.944 million viewers, #8; adults 18-49: 0.2, #T8), "Whose Line Is It Anyway?" (0.618 million viewers, #10; adults 18-49: 0.1, #10) and another "Whose Line Is It Anyway?" (0.749 million viewers, #9; adults 18-49: 0.2, #T8).

Week-to-week changes (adults 18-49):
+20.00% - Dateline NBC
+14.29% - Blue Bloods (vs. 4/3/20)
0.00% - Magnum P.I.
0.00% - MacGyver
0.00% - The Blacklist
-16.67% - WWE SmackDown

Year-to-year changes (adults 18-49):
+40.00% - 2020 NFL Draft - Rounds 2-3
+25.00% - WWE SmackDown (vs. Various)
+16.67% - MacGyver
+14.29% - Blue Bloods
+9.09% - Dateline NBC (vs. The Blacklist/Dateline NBC)
0.00% - Magnum P.I. (vs. Hawaii Five-0)
0.00% - The Blacklist

Source: Nielsen Media Research, ShowBuzzDaily.com