Big Brother RatingsCBS’ Big Brother (2.6/8) returned for another summer last night with four vets of the show as this season’s coaches. Hosted by Julie Chen, the 14th season of the reality show was down 7% from last year’s season bow but marked the highest adults 18-49 number for its season premiere since February 2008. It drew 7.09 million viewers to rank as the night’s most-watched show. The network also aired reruns of The Big Bang Theory – at 8 PM (2.3/8) and 8:30 (2.8/9) — and Person Of Interest (1.2/4) and took the night in total viewers and the demo.

On Fox, the celebrity date series The Choice (1.2/4) wrapped its first season down 25% from a week ago, competing this time against the Big Brother bow. Preceding it was the George Lopez-hosted Take Me Out (1.2/4), which was flat with a week ago.

ABC had a new live episode of Duets (1.0/3) at 8 PM which tied its series low. Wipeout (1.7/5) was down 6% from last week, and Rookie Blue (1.3/4) was flat at 10 PM. NBC had Saving Hope (0.5/2) at 9 PM, up 25% from last week, followed by a new Rock Center With Brian Williams (1.2/4), up 33%.

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