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

Here are the highlights of the 10 ad-sustained programs that aired in primetime on the broadcast networks last night (3/12/21):

FOX (2.010 million viewers, #4; adults 18-49: 0.5, #1) led a competitive Friday among adults 18-49 thanks to "WWE SmackDown" (2.010 million viewers, #6; adults 18-49: 0.5, #T2).

NBC (3.151 million viewers, #1; adults 18-49: 0.4, #T2) was the most-watched network with its duo of "The Blacklist" (3.162 million viewers, #2; adults 18-49: 0.3, #6) and "Dateline NBC" (3.146 million viewers, #3; adults 18-49: 0.5, #T2).

Next up was ABC (2.999 million viewers, #2; adults 18-49: 0.4, #T2) with originals from "Shark Tank" (3.911 million viewers, #1; adults 18-49: 0.6, #1) and "20/20" (2.544 million viewers, #5; adults 18-49: 0.4, #5).

Meanwhile, CBS (2.588 million viewers, #3; adults 18-49: 0.4, #T2) opted for encores of "Oprah with Meghan and Harry: A CBS Primetime Special" (3.114 million viewers, #4; adults 18-49: 0.5, #T2) and "Clarice" (1.535 million viewers, #7; adults 18-49: 0.2, #7).

And finally, The CW (0.748 million viewers, #5; adults 18-49: 0.1, #5) closed out the night with "Whose Line Is It Anyway?" (0.818 million viewers, #8; adults 18-49: 0.1, #T8), a repeat "Whose Line Is It Anyway?" (0.718 million viewers, #10; adults 18-49: 0.1, #T8) and "Penn & Teller: Fool Us" (0.728 million viewers, #9; adults 18-49: 0.1, #T8).

Week-to-week changes (adults 18-49):
+25.00% - Dateline NBC
0.00% - The Blacklist
0.00% - Whose Line Is It Anyway?
0.00% - Penn & Teller: Fool Us
-14.29% - Shark Tank
-16.67% - WWE SmackDown
-33.33% - 20/20

Year-to-year changes (adults 18-49):
-9.09% - Dateline NBC (vs. Lincoln Rhyme: Hunt for the Bone Collector/Dateline NBC)
-25.00% - Shark Tank
-28.57% - WWE SmackDown
-42.86% - 20/20
-50.00% - The Blacklist (vs. Lincoln Rhyme: Hunt for the Bone Collector)
-50.00% - Whose Line Is It Anyway? (vs. Penn & Teller: Fool Us (Repeat))
-50.00% - Penn & Teller: Fool Us (vs. Whose Line Is It Anyway? (Repeats))

Here are the highlights of the 12 ad-sustained programs that aired in primetime on the broadcast networks one year ago (3/13/20):

CBS (7.000 million viewers, #1; adults 18-49: 0.7, #T1) was the most-watched network on Friday with its trio of "MacGyver" (5.816 million viewers, #3; adults 18-49: 0.6, #T6), "Hawaii Five-0" (7.032 million viewers, #2; adults 18-49: 0.7, #T2) and "Blue Bloods" (8.152 million viewers, #1; adults 18-49: 0.7, #T2).

ABC (4.501 million viewers, #2; adults 18-49: 0.7, #T1) shared in the demo honors with fresh installments from "Shark Tank" (4.706 million viewers, #4; adults 18-49: 0.8, #1) and "20/20" (4.398 million viewers, #5; adults 18-49: 0.7, #T2).

FOX (2.588 million viewers, #4; adults 18-49: 0.7, #T1) likewise split the adults 18-49 crown with "WWE SmackDown" (2.588 million viewers, #9; adults 18-49: 0.7, #T2).

Meanwhile, NBC (3.481 million viewers, #3; adults 18-49: 0.6, #4) offered up the penultimate "Lincoln Rhyme: Hunt for the Bone Collector" (3.823 million viewers, #6; adults 18-49: 0.6, #T6), the season finale of "Lincoln Rhyme: Hunt for the Bone Collector" (3.426 million viewers, #7; adults 18-49: 0.5, #9) and "Dateline NBC" (3.194 million viewers, #8; adults 18-49: 0.6, #T6).

And finally, The CW (0.852 million viewers, #5; adults 18-49: 0.2, #5) closed out the night with repeats of "Penn & Teller: Fool Us" (1.014 million viewers, #10; adults 18-49: 0.2, #T10), "Whose Line Is It Anyway?" (0.707 million viewers, #11; adults 18-49: 0.2, #T10) and another "Whose Line Is It Anyway?" (0.674 million viewers, #12; adults 18-49: 0.2, #T10).

Week-to-week changes (adults 18-49):
+20.00% - Lincoln Rhyme: Hunt for the Bone Collector
+16.67% - Blue Bloods
+16.67% - Hawaii Five-0
0.00% - Shark Tank
0.00% - 20/20
0.00% - WWE SmackDown
0.00% - MacGyver
0.00% - Dateline NBC

Year-to-year changes (adults 18-49):
+45.45% - Shark Tank (vs. Fresh Off the Boat/Speechless)
+20.00% - Lincoln Rhyme: Hunt for the Bone Collector - 8:00 (vs. Blindspot)
+20.00% - Dateline NBC
+16.67% - WWE SmackDown (vs. Various)
0.00% - 20/20
0.00% - Lincoln Rhyme: Hunt for the Bone Collector - 9:00 (vs. The Blacklist)
-12.50% - Blue Bloods
-12.50% - Hawaii Five-0
-14.29% - MacGyver

Source: Nielsen Media Research, ShowBuzzDaily.com