TV Ratings: 'Big Bang,' 'Grey's' and 'Scandal' Grow on Thursday, 'X Factor' Drops

The Fox show, down 14 percent from last Thursday, loses the common hour to NBC a cappella competition "The Sing-Off."

With Thursday Night Football's showdown between the San Diego Chargers and the Denver Broncos airing on CBS affiliates in the teams' respective markets, CBS' Thursday ratings are subject to adjustment -- though the network still easily locked down a nightly win with an average 2.7 rating among adults 18-49 and 11.3 million viewers. 

The Big Bang Theory (5.3 adults) topped all of the night's broadcast offerings, up half a point from last week. The Millers (2.9 adults) improved by the same measure, with The Crazy Ones (2.1 adults) steady with its most recent performance. Two and a Half Men (2.1 adults) led into an even Elementary (1.8 adults).

A steady Once Upon a Time (0.9 adults) led into boosted episodes of Grey's Anatomy (2.7 adults) and Scandal (3.2 adults). The dramas were up a respective four- and two-tenths of a point, giving ABC a nightly average of a 2.2 rating among adults 18-49 and 7.1 million viewers.

The Sing-Off, still dipping from the premiere earlier in the week, averaged a 1.4 adults rating at 8 p.m. Sean Saves the World (1.0 adults) improved from its last showing by a tenth, while The Michael J. Fox Show (0.9 adults) and Parenthood (1.2 adults) held even. NBC averaged a 1.2 rating among adults 18-49 and 3.9 million viewers.

The X Factor (1.2 adults) shed two-tenths of a point from last Thursday on Fox, losing the common hour to NBC's singing competition. With an encore of Glee, the network averaged a 1.0 rating with adults 18-49 and 3.7 million viewers for the night.

Both The Vampire Diaries (1.0 adults) and Reign (0.6 adults) matched last Thursday's scores, with The CW posting a 0.8 adults 18-49 rating and 2.1 million viewers.