TV Ratings: 'Big Brother,' 'Wife Swap,' 'Whodunnit' Drop on Sunday

A relatively sleepy night of TV sees the broadcast networks' lone original offerings dip.
"Big Brother"

CBS scored a modest win with Big Brother's Sunday premiere. The reality series topped the night with adults 18-49, averaging a 1.7 rating in the key demo, though it was down by six-tenths of a point from last summer's Sunday premiere and five-tenths from last week's opener. Averaged in with encores, including a relatively strong rebroadcast of the Under the Dome premiere (1.1 adults), CBS averaged a 1.1 rating with adults 18-49 and 5.6 million viewers.

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Animation encores fetched Fox a second place in the key demo, averaging a 1.0 rating with adults 18-49. The network pulled in 2.3 million viewers.

Both Celebrity Wife Swap (1.0 adults) and Whodunnit (1.0 adults) dropped three-tenths of a point from last week's respective premieres. ABC averaged a 0.9 adults rating and 3.5 million viewers.

NBC summer drama entry Crossing Lines (0.7 adults) was even with last week's premiere. The network pulled a 0.8 rating with adults 18-49 and 3.6 million viewers.

Univision averaged a 0.9 rating with adults 18-49 and 2.2 million viewers, while Telemundo had a 0.6 adults rating and 1.6 million viewers.