CBS came out on top in the Wednesday night broadcast ratings as its reality mainstay "Big Brother" ticked upward, based on Nielsen overnights for prime time in the key 18-49 demo.

TVbytheNumbers.com reports that "Big Brother" came in as the top show of the night on broadcast prime, improving one-tenth of a point from last week to a 2.0 average in 18-49. Leading out from "Brother," CBS's "Extant" lost one-tenth, settling for a 1.5. The network rounded out prime time with a "Criminal Minds" repeat (1.1 average).

The other big four broadcasters were well off the pace, as NBC and ABC relied heavily on repeat programming while Fox rode a two-hour "So You Think You Can Dance" to a 1.0 average in viewers 18-49. That number was down two-tenths from a week ago and an all-time low for the series.

NBC's only fresh program was "Taxi Brooklyn," which was off one-tenth from a week ago with a 0.8 average in 18-49 and was beaten soundly by the network's two-hour repeat of "America's Got Talent," which pulled a 1.3 in the demo.

ABC's sole original was "Motive," which was off one-tenth from last week with a 0.7 average in adults 18-49.

For prime time overall, CBS's 1.5 average rating led the way in the 18-49 demo, followed by Univision (1.2 average), NBC (1.1), Fox (1.0) and ABC (0.9). CBS also came out on top in total viewers, averaging 6.5 million to lead NBC (5.6 million), Fox (3.6 million), ABC (3.5 millon) and Univision (2.9 million).