TV Ratings 7/21/17: 'Big Brother' Leads, 'Descendants' Disastrous (UPDATED)

Here are the final broadcast ratings for July 21, 2017.

photo: Disney

Time	Show	18-49 Rating	Total Viewers (In Millions)
8:00pm	Big Brother (CBS)	1.5	5.45
	America's Got Talent (R) (NBC)	0.7	4.34
	Descendants 2 (ABC)	0.6	2.41
	MasterChef (R) (FOX)	0.4	1.51
	Masters of Illusion (CW)	0.2	1.22

8:30pm	Masters of Illusion (R) (CW)	0.2	1.12

9:00pm	Hawaii Five-0 (R) (CBS)	0.5	3.87
	Beat Shazam (R) (FOX)	0.4	1.27
	Penn & Teller: Fool Us (R) (CW)	0.2	1.03

10:00pm	Dateline NBC (NBC)	0.9	4.68
	Blue Bloods (R) (CBS)	0.5	4.67

10:30pm	Descendants 2: The After Party (ABC)	0.3	1.13

(R) = repeat

Finals Update: 'Descendants 2' (0.6) adjusted up two-tenths. 'Big Brother' (1.5) also adjusted up. A repeat of 'America's Got Talent' (0.7) adjusted down.

ABC dropped their Friday night line-up for one night in favor of 'Descendants 2' (0.4). It went well below the alphabet network's normal delivery. At 10:30, a 'Descendants 2' after party (0.3) went even lower. Despite the low rating here, the film aired on several different channels simultaneously, so it's not exactly fair to judge it just by the ABC result.

CBS easily took the lead at 8 as a special Friday edition of 'Big Brother' (1.4) was the top program of the night. Repeats of 'Hawaii Five-0' (0.5) and 'Blue Bloods' (0.5) couldn't capitalize on the stronger lead-in.

NBC's 'Dateline' (0.9) was up two-tenths from last week. At 8, NBC had their normal 'AGT' repeat (0.8).

FOX's cooking show/game show repeat line-up (0.4/0.4) was down a tick from last week at 8.

The CW's 'Masters of Illusion' (0.2) was steady with last week. Repeats of itself (0.2) and 'Penn & Teller: Fool Us' (0.2) capped off the night.