big brother 12 cast 02 320 TV Ratings: CBS leans on 'Big Brother' ThursdayFast National ratings for Thursday, July 8, 2010

The premiere of CBS’ reality backstabbing show “Big Brother 12” helped the network come in first with viewers for the night, although it didn’t grab as many viewers as ABC’s “Wipeout” in the same timeslot.

CBS won the night, averaging of 7.6 million viewers and a 4.9 rating/9 share in households. ABC came next with 6.4 million and 3.9/7. Next came FOX (4.9 million, 3.2/6), NBC (2.2 million, 1.4/3) and The CW (1.4 million, 0.9/2).

CBS just eked out a victory among the 18-49 adult demo with a 1.8 rating, just ahead of ABC and FOX tied with a 1.7 apiece. NBC and The CW only nabbed a 0.9 and 0.5, respectively.

Thursday hour by hour:

8 p.m.

“Wipeout” (7.9 million viewers, 4.3/8 households)
CBS: “Big Brother 12” (7.3 million, 4.4/8)
FOX: “Glee” rerun (3.9 million, 2.6/5)
NBC: “Community” marathon (2.4 million, 1.6/3)
The CW: “The Vampire Diaries” rerun (1.5 million, 1.0/2)

18-49 leader: “Wipeout” and “Big Brother” tie (2.4)

9 p.m.

“CSI” rerun (6.8 million, 4.6/8)
ABC: “Rookie Blue” (6.4 million, 3.9/7)
FOX: “So You Think You Can Dance” (5.6 million, 3.8/6)
NBC: “Community” marathon (2.3 million, 1.4/3)
The CW: “Moonlight” rerun (1.2 million, 0.8/1)

18-49 leader:
“So You Think You Can Dance” (2.1)

10 p.m.

“The Mentalist” rerun (8.6 million, 5.6/10)
ABC: “Boston Med” (5 million, 3.4/6)
NBC: “Community” marathon (2.1 million, 1.3/2)

18-49 leader: “The Mentalist” (1.6)

Ratings information includes live and same-day DVR viewing. All numbers are preliminary and subject to change, especially in the case of live telecasts. Source: The Nielsen Company.

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Photo credit: CBS

Posted by:Hanh Nguyen