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

Here are the highlights of the nine ad-sustained programs that aired in primetime on the broadcast networks last night (2/23/18):

[EDITOR'S NOTE: Due to the nature of live events, Fast Nationals for NBC are approximate.]

NBC (12.054 million viewers, #1; adults 18-49: 2.6, #1) entered the final weeks of its "2018 Winter Olympics" (12.054 million viewers, #1; adults 18-49: 2.6, #1) coverage on top.

CBS (4.488 million viewers, #2; adults 18-49: 0.9, #2) then was the silver draw with its mix of "Celebrity Big Brother" (4.823 million viewers, #2; adults 18-49: 1.1, #2), another hour of "Celebrity Big Brother" (4.369 million viewers, #3; adults 18-49: 1.0, #3) and a repeat "Blue Bloods" (4.271 million viewers, #4; adults 18-49: 0.4, #7).

Next up was ABC (2.427 million viewers, #3; adults 18-49: 0.6, #3) with the feature "Wreck-It Ralph" (1.970 million viewers, #7; adults 18-49: 0.5, #T5) and a new "20/20" (3.342 million viewers, #5; adults 18-49: 0.6, #4).

Meanwhile, FOX (2.079 million viewers, #4; adults 18-49: 0.5, #4) offered up a rebroadcast of "Showtime at the Apollo" (2.079 million viewers, #6; adults 18-49: 0.5, #T5).

And finally, encores of "The 3rd Annual Howie Mandel Stand-Up Gala" (0.778 million viewers, #8; adults 18-49: 0.1, #T8) and "Whose Line Is It Anyway?" (0.559 million viewers, #9; adults 18-49: 0.1, #T8) on The CW (0.723 million viewers, #5; adults 18-49: 0.1, #5) rounded out the night.

Week-to-week changes (adults 18-49):
+10.00% - Celebrity Big Brother - 8:00
0.00% - Celebrity Big Brother - 9:00
0.00% - 20/20
-33.33% - 2018 Winter Olympics

Year-to-year changes (adults 18-49):
0.00% - Celebrity Big Brother - 8:00 (vs. MacGyver)
-9.09% - Celebrity Big Brother - 9:00 (vs. Hawaii Five-0)
-27.78% - 2018 Winter Olympics (vs. 2/21/14)
-40.00% - 20/20

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

Late-night metered market ratings will return following NBC's Olympics coverage.

Here are the highlights of the 14 ad-sustained programs that aired in primetime on the broadcast networks one year ago (2/24/17):

ABC (5.448 million viewers, #2; adults 18-49: 1.1, #1) edged out the competition on Friday with its mix of "Last Man Standing" (6.597 million viewers, #4; adults 18-49: 1.1, #T2), "Dr. Ken" (4.581 million viewers, #7; adults 18-49: 0.9, #6), "Shark Tank" (5.814 million viewers, #5; adults 18-49: 1.3, #1) and "20/20" (4.942 million viewers, #6; adults 18-49: 1.0, #5).

CBS (7.786 million viewers, #1; adults 18-49: 1.0, #2) then was a close second with new episodes of "MacGyver" (7.013 million viewers, #3; adults 18-49: 1.1, #T2) and "Hawaii Five-0" (9.018 million viewers, #1; adults 18-49: 1.1, #T2) plus a repeat "Blue Bloods" (7.327 million viewers, #2; adults 18-49: 0.8, #T7).

Next up was NBC (3.419 million viewers, #3; adults 18-49: 0.7, #3) with originals from "Grimm" (3.979 million viewers, #8; adults 18-49: 0.8, #T7), "Emerald City" (2.309 million viewers, #11; adults 18-49: 0.6, #T10) and "Dateline NBC" (3.970 million viewers, #9; adults 18-49: 0.8, #T7).

Meanwhile, FOX (2.226 million viewers, #4; adults 18-49: 0.5, #4) served up new episodes of "Rosewood" (2.690 million viewers, #10; adults 18-49: 0.6, #T10) and "Sleepy Hollow" (1.761 million viewers, #12; adults 18-49: 0.5, #12).

And finally on The CW (0.837 million viewers, #5; adults 18-49: 0.3, #5), new episodes of "The Vampire Diaries" (1.067 million viewers, #13; adults 18-49: 0.4, #13) and "Reign" (0.607 million viewers, #14; adults 18-49: 0.2, #14) closed out the night.

Week-to-week changes (adults 18-49):
+22.22% - MacGyver
+18.18% - Shark Tank
+12.50% - Dr. Ken
+11.11% - 20/20
0.00% - Hawaii Five-0
0.00% - Last Man Standing
0.00% - Grimm
0.00% - Dateline NBC
0.00% - Rosewood
0.00% - Emerald City
0.00% - Sleepy Hollow
0.00% - The Vampire Diaries
0.00% - Reign

Year-to-year changes (adults 18-49):
+42.86% - 20/20
+14.29% - Grimm (vs. Caught on Camera with Nick Cannon)
+8.33% - Shark Tank
0.00% - MacGyver (vs. The Amazing Race)
0.00% - Hawaii Five-0
0.00% - Last Man Standing
0.00% - Sleepy Hollow (vs. Second Chance)
-10.00% - Dr. Ken
-20.00% - The Vampire Diaries
-25.00% - Rosewood (vs. Sleepy Hollow)
-33.33% - Dateline NBC
-50.00% - Emerald City (vs. Dateline NBC)
-50.00% - Reign (vs. The Originals)

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

· In Nielsen's 56 metered markets, household results were: "The Tonight Show Starring Jimmy Fallon," 2.2/6; "Late Show with Stephen Colbert," 2.4/6; and ABC's "Jimmy Kimmel Live," 1.7/4 with an encore.

· In the 25 markets with Local People Meters, adult 18-49 results were: "The Tonight Show Starring Jimmy Fallon," 0.7/4; "Late Show," 0.5/3; and "Jimmy Kimmel Live," 0.5/3 with an encore.

· From 12:35-1:05 a.m. ET, ABC's "Nightline" averaged a 1.3/4 in metered-market households and a 0.4/3 in 18-49 in the Local People Meters.

· From 12:35-1:35 a.m. ET, ratings were: "Late Night with Seth Meyers," 1.2/4 in metered-market households with an encore; CBS's "Late Late Show," 1.1/4 with an encore. In the 25 markets with Local People Meters, averages were: "Late Night," 0.4/3 in 18-49 with an encore; "Late Late Show," 0.2/2 with an encore.

· At 1:35 a.m., "Last Call with Carson Daly" averaged a 0.7/3 in metered-market households with an encore and a 0.2/2 in adults 18-49 in the 25 markets with local people meters.

Source: Nielsen Media Research