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

Here are the highlights of the 12 ad-sustained programs that aired in primetime on the broadcast networks last night (7/21/17):

CBS (4.640 million viewers, #1; adults 18-49: 0.8, #T1) pulled in front on Friday thanks to a special "Big Brother 19" (5.420 million viewers, #1; adults 18-49: 1.4, #1) followed by repeats of "Hawaii Five-0" (3.826 million viewers, #5; adults 18-49: 0.5, #T4) and "Blue Bloods" (4.676 million viewers, #2; adults 18-49: 0.5, #T4).

NBC (4.516 million viewers, #2; adults 18-49: 0.8, #T1) however shared in the demo honors with an encore "America's Got Talent" (4.451 million viewers, #4; adults 18-49: 0.8, #3) and a new "Dateline NBC" (4.645 million viewers, #3; adults 18-49: 0.9, #2).

Next up was ABC (1.619 million viewers, #3; adults 18-49: 0.4, #T3) and its telecast of "Descendants 2" (1.719 million viewers, #6; adults 18-49: 0.4, #T6) followed by "Descendants 2: ABC After-Party" (1.116 million viewers, #11; adults 18-49: 0.3, #9).

Meanwhile, FOX (1.407 million viewers, #4; adults 18-49: 0.4, #T3) offered up encores of "MasterChef" (1.521 million viewers, #7; adults 18-49: 0.4, #T6) and "Beat Shazam" (1.294 million viewers, #8; adults 18-49: 0.4, #T6).

And finally, The CW (1.126 million viewers, #5; adults 18-49: 0.2, #5) rounded out the night with a new "Masters of Illusion" (1.271 million viewers, #9; adults 18-49: 0.2, #T10) plus repeats of "Masters of Illusion" (1.145 million viewers, #10; adults 18-49: 0.2, #T10) and "Penn & Teller: Fool Us" (1.044 million viewers, #12; adults 18-49: 0.2, #T10).

Week-to-week changes (adults 18-49):
+28.57% - Dateline NBC
0.00% - Masters of Illusion

Year-to-year changes (adults 18-49):
+28.57% - Dateline NBC
-6.67% - Big Brother 19
-33.33% - Masters of Illusion
-44.44% - Descendants 2 (vs. Various)
-62.50% - Descendants 2: ABC After-Party (vs. 20/20)

In late-night metered market ratings (via NBC's press release):

TBA

Here are the highlights of the 13 ad-sustained programs that aired in primetime on the broadcast networks one year ago (7/22/16):

CBS (4.778 million viewers, #1; adults 18-49: 0.9, #1) got a boost on Friday with a special "Big Brother 18" (5.283 million viewers, #1; adults 18-49: 1.5, #1) followed by repeats of "Hawaii Five-0" (3.899 million viewers, #4; adults 18-49: 0.6, #8) and "Blue Bloods" (5.153 million viewers, #2; adults 18-49: 0.7, #T4).

NBC (4.061 million viewers, #2; adults 18-49: 0.8, #2) then claimed the silver with an encore of "America's Got Talent" (4.218 million viewers, #3; adults 18-49: 0.9, #2) and a new "Dateline NBC" (3.747 million viewers, #7; adults 18-49: 0.7, #T4).

Next up was ABC (3.624 million viewers, #3; adults 18-49: 0.7, #3) with its mix of "Shark Tank" (3.844 million viewers, #5; adults 18-49: 0.7, #T4), "Primetime: What Would You Do?" (3.265 million viewers, #8; adults 18-49: 0.7, #T4) and "20/20" (3.764 million viewers, #6; adults 18-49: 0.8, #3).

Meanwhile, FOX (1.498 million viewers, #4; adults 18-49: 0.4, #4) offered up second runs of "Rosewood" (1.606 million viewers, #9; adults 18-49: 0.4, #T9) and "MasterChef" (1.391 million viewers, #11; adults 18-49: 0.4, #T9).

And finally, a new "Masters of Illusion" (1.356 million viewers, #12; adults 18-49: 0.3, #T11) and repeats of "Masters of Illusion" (1.271 million viewers, #13; adults 18-49: 0.3, #T11) and "Penn & Teller: Fool Us" (1.468 million viewers, #10; adults 18-49: 0.3, #T11) on The CW (1.390 million viewers, #5; adults 18-49: 0.3, #5) closed out the night.

Week-to-week changes (adults 18-49):
+16.67% - Primetime: What Would You Do?
0.00% - 20/20
0.00% - Dateline NBC
0.00% - Masters of Illusion

Year-to-year changes (adults 18-49):
+275.00% - Big Brother 18 (vs. Elementary (Repeat))
0.00% - Masters of Illusion
-11.11% - 20/20
-22.22% - Dateline NBC
-30.00% - Primetime: What Would You Do?

In late-night metered market ratings (via NBC's press release):

TBA

Source: Nielsen Media Research